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2016 Myeong Hwan Ahn and Duck Joo Lee, "Development of high order and high resolution schemes for efficient shock capturing in high-speed flows," 30th Congress of the International Council of the Aeronautical Sciences, DCC, Daejeon, Korea, Sep. 25-30, 2016.  
2016 Seulgi Yi, Hyung-Il Kwon, Dongkyun Im, Seongim Choi, and Duck-Joo Lee, "Noise Characteristics of Contra-Rotating Open Rotor with Time-Spectral CFD and Aeroacoustics Analysis," 54th AIAA Aerospasce Sciences Meeting, San Diego, CA, USA, Jan. 4-8, 2016.  
2016 Se Hwan Park, Yeon Bok Chu, and Duck Joo Lee, "Investigation of Main Rotor-Tail Rotor Interaction in Hover Flight Using Vortex Particle Method," 5th Asian-Australian Rotorcraft Forum (9th Australian Pacific Vertiflite Conference on Helicopter Technologies), Singapore, Nov. 17-18, 2016.  
2016 Se Hwan Park, Yeon Bok Chu, Duck Joo Lee and Ji Sung Jang, "Trimmed Simulation of a Complete Helicopter Configuration in Hover Flight," AHS 72nd Annual Forum, West Palm Beach, Florida, USA, May 17-19, 2016.  
2016 Yeong Min Jo, Se Hwan Park, Duck Joo Lee, Seong Im Choi, “Development of An Efficient Three-Dimensional Tightly Coupled Euler/Potential Solver for Transonic Flow Analysis,” 34th AIAA Applied Aerodynamics Conference, June 17-19, 2016, Wachington, DC, U.S.A.  
2016 Yeong Min Jo, Se Hwan Park, Duck Joo Lee, Seong Im Choi, “Development of A Three-Dimensional Tightly Coupled Euler/Potential Flow Solver for Transonic Flow”, 30th Congress of the International Council of the Aeronautical Sciences, Sep. 26-29, 2016, Daejeon, South Korea.  
2016 Yeongmin Jo, Jangho Park, Seongim Choi, and Duck-Joo Lee, "Adaptive Variable-Fidelity Analysis and Design of A Tailless Aircraft under Model-Form Uncertainty." AIAA Scitech 2016, San Diego, CA, U.S.A., Jan. 4-8, 2016.  
2015 Young Min Jo, Jang Ho Park, Jae Young Choi, Christopher Ocheltree, Seong Im Choi, and Duck Joo Lee. "Adaptive Variable-Fidelity Aerodynamic Analysis and Design for Tailless Aircraft under Model-Form Uncertainty." 16th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, Dallas, United States, June 22, 2015.  
2015 Min Jun Park, Ji Sung Jang, and Duck Joo Lee, "Numerical Investigation of Strut Effect on Ducted Fan UAV in Hover," 4th Asian/Austrailian Rotorcraft Forum, Bengaluru, India, Nov. 16-18, 2015.  
2015 Yeongmin Jo, Seongim Choi, Seulgi Yi, and Duckjoo Lee. "Variable-Fidelity Design Using Kriging Surrogate Model with Fidelity Indicator," 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Kissimmee, Florida, January 5-9, 2015  
2015 Yeon Bok Chu, Ji Sung Jang, Duck Joo Lee, Seong Yong Wie, Keun Woong Song, and Ki Hoon Jeong, "Analysis of Aerodynamic Characteristics of Whirl Tower Test in Ground Effect," 4th Asian/Austrailian Rotorcraft Forum, Bengaluru, India, Nov. 16-18, 2015.  
2015 Se Hwan Park, Yeon Bok Chu, Sang Ha Park, Dong-Ho Seo, and Duck Joo Lee, "Analysis of Hover/Hovering Turn of a Complete Helicopter Configuration Using a Coupled Aerodynamics-Flight Dynamics Solver," 41st European Rotorcraft Forum, Munich, Germany, Sep. 1-4, 2015.  
2015 Seulgi Yi, Rachit Prasad, Seong Im Choi, Dong Kyun Im, and Duck Joo Lee. "Spectral Formulation-Based FSI and Coupled Sensitivity Analysis for Dyanmic Aeroelastic Problems." 33rd AIAA Applied Aerodynamics Conference, Dallas, United States, June 22, 2015.  
2015 Seulgi Yi, Seong Im Choi, Dong Kyun Im, and Duck Joo Lee. "An Efficient Time-variant Fluid-Structure Interaction Analysis Based on Coupling in Frequency Domain." 53rd AIAA Aerospace Sciences Meeting, Florida, United States, January 5, 2015.  
2014 Yeon Bok Chu and Duck Joo Lee. "A Study on Aerodynamic-Dynamic Characteristics of Helicopter during Maneuver Flight." 3rd Asian-Australian Rotorcraft Forum (ARF), Melbourne, Australia, December 18, 2014.  
2014 Se Hwan Park and Duck Joo Lee "Prediction of Wake Structure and Induced Velocity of a Helicopter Rotor in Descent Flights using a Vortex Particle Method," The 6th International Conference on Vortex Flows and Vortex Models (ICVFM Nagoya 2014), Nagoya, Japan, November 17-20, 2014.,  
2014 Se Hwan Park and Duck Joo Lee, "Prediction of Wake Structure and Induced Velocity of a Helicopter Rotor in the Vortex Ring State Using a Vortex Particle Method." 3rd Asian-Australian Rotorcraft Forum (ARF), Melbourne, Australia, December 18, 2014.  
2014 Sony Chindada and Duck Joo Lee. "Aeroacoustic Investigation of Flow in a Trapped Vortex Combustor." Vortex Methods - Selected Papers of the First International Conference on Vortex Methods 2014, Nagoya, Japan, November 17, 2014.  
2014 Young Min Jo and Seong Im Choi. "Variable-Fidelity Aerodynamic Design Using Gradient-Enhanced Kriging Surrogate Model with Regression." 14th AIAA Aviation Technology, Integration, and Operations Conference, United States, June 16, 2014.  
2014 Duck Joo Lee. "Numerical Prediction of Rotor Tip-Vortex Roll-Up in Axial Flights by Using a Time-Marching Free-Wake Method." Vortex Methods - Selected Papers of the First International Conference on Vortex Methods 2014, Nagoya, Japan, November 17, 2014.  
2013 Myeang Hyen Bae, Yeon Bok Chu, and Duck Joo Lee. "Analysis of Causes and Countermeasures of Helicopter Accident from the Engineering Viewpoint." The 2nd Asian/Australian Rotorcraft Forum and the 4th International Basic Research Conference on Rotorcraft Technology, Tianjin, China, September 8, 2013.  
2013 Won Ju Jeon and Duck Joo Lee. "Rational Approximation Applied to Jones Integral Equation for Acoustic Diffraction by Sharp Edges." 20th International Congress on Sound and Vibration, Bangkok, Thailand, July 11, 2013.  
2013 Yong Woo Lee and Duck Joo Lee. "Derivation of Convective Kirchhoff’s Formula for Far-field Propagation of Sound." The 2nd Asian/Australian Rotorcraft Forum and the 4th International Basic Research Conference on Rotorcraft Technology, Tianjin, China, September 8, 2013.  
2013 Min Jun Park, Ji Sung Jang, and Duck Joo Lee. "Design, Performance Evaluation and Contribution of Each Component of Ducted Fan UAV in Hover." The 2nd Asian/Australian Rotorcraft Forum and the 4th International Basic Research Conference on Rotorcraft Technology, Tianjin, China, September 8, 2013.  
2013 Hyung Il Kwon, Seul Gi Yi, Seong Im Choi, Duck Joo Lee, Jang Hyuk Kwon, and Dong Kyun Im. "Design of a Low-Noise Open Rotor Using an Implicit Harmonic Balance Method." 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, Grapevine, Texas, United States, January 7, 2013.  
2013 Ji Sung Jang, Se Hwan Park, and Duck Joo Lee. "Prediction of Fuselage Surface Pressures in Rotor–Fuselage Interactions Using an Integral Solution of Poisson Equation," The 2nd Asian/Australian Rotorcraft Forum and the 4th International Basic Research Conference on Rotorcraft Technology, Tianjin, China, September 8, 2013.  
2012 Ji Sung Jang, Seong Yong Wie, and Duck Joo Lee. "Correction of Ground Effect for Whirl Tower Test Using CFD/Freewake Coupling Method = Correction of Ground Effect for Whirl Tower Test Using CFD/Freewake Coupling Method." 1st Asian/Australian Rotorcraft Forum and Exhibition, BEXCO, Busan, South Korea, February 12, 2012.  
2012 Hyung Il Kwon, Seong Im Choi, Ji Sung Jang, Dong Kyun Im, and Duck Joo Lee. "A Preliminary Study of Open Rotor Design Using a Harmonic Balance Method." 1st Asian/Australian Rotorcraft Forum and Exhibition, BEXCO, Busan, South Korea, February 12, 2012.  
2012 Se Hwan Park and Duck Joo Lee. "Development of a Coupled 2-D Panel/Euler Solver for Numerical Analysis of Transonic Flow," 1st Asian/Australian Rotorcraft Forum and Exhibition, BEXCO, Busan, South Korea, February 12, 2012.  
2012 Yong Woo Lee, Ji Sung Jang, and Duck Joo Lee. " Prediction of Wind Turbine Broadband Noise Using Time Marching Freewake Method and Semi-empirical Equation." 1st Asian/Australian Rotorcraft Forum and Exhibition, BEXCO, Busan, South Korea, February 12, 2012.  
2012 Ji Sung Jang, Duck Joo Lee, and Seong Yong Wie. "Simulation and Experimetal Study of Ducted Fan UAV in Hover and Forward Flight = CFD Simulation and Experimetal Study of Ducted Fan UAV in Hover and Forward Flight." 1st Asian/Australian Rotorcraft Forum and Exhibition, BEXCO, Busan, South Korea, February 12, 2012.  
2012 Ji Sung Jang, Seong Im Choi, Hyung Il Kwon, Dong Kyun Im, Duck Joo Lee, and Jang Hyuk Kwon. "A Preliminary Study of Open Rotor Design Using a Harmonic Balance Method." 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, Gaylord Opryland Resort & Convention Center, Nashville, United States, January 9, 2012.  
2012 Won Ju Jeon and Duck Joo Lee. "Mathematical Revisit of Acoustic Shielding by Empennage." 19th International Congress on Sound and Vibration, Vilnius, Lithuania, July 8, 2012.  
2012 Yong Woo Lee, Ji Sung Jang, and Duck Joo Lee. " Prediction of Wind Turbine Broadband Noise Using Time Marching Freewake Method and Semi-empirical Equation." 1st Asian/Australian Rotorcraft Forum and Exhibition, BEXCO, Busan, South Korea, February 12, 2012.  
2011 Yong Woo Lee and Duck Joo Lee. "Control of Airflow Noise From Diesel Engine Turbocharger." SAE 2011 World Congress and Exhibition, Detroit, MI, United States, April 12, 2011.  
2009 Ji Sung Jang and Duck Joo Lee. "Experimental Investigation of Noise Characteristic of the International Space Station (ISS-RS)." 60th International Astronautical Congress, 2009, Daejeon, South Korea, October 12, 2009.  
2009 Yong Woo Lee, Chi Hoon Cho, Duck Joo Lee, and In Cheol Lee. "On the Generations of Whistle Noise from an Airfoil and a Simplified Side Mirror." 15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference)), Miami, FL, United States, May 12, 2009.  
2009 Ji Sung Jang and Duck Joo Lee. "Experimental Study of Ring-wing Type UAV." 2nd International Forum on Rotorcraft Multidisciplinary Technology, Seoul, South Korea, October 19, 2009.  
2008 Seong Yong Wie, Duck Joo Lee, and Seong Kyu Lee. "Numerical Investigation of Rotor Wake in Vertical and Forward Flight.” 4th International Conference on vortex flows and models (ICVFM2008), Daejeon, South Korea, April 21-23, 2008.  
2008 Duck Joo Lee, In Cheol Lee, Dae Nyoung Heo, and Young Nam Kim. "Numerical Analysis of Aerodynamic Noise from Feedback Phenomena Using Computational Aeroacoustics(CAA)." 12th Asian Congress of Fluid Mechanics, Daejeon, South Korea, August 18, 2008.  
2008 Seong Yong Wie, Dong Kyun Im, Eugene Kim, Jang Hyuk Kwon, and Duck Joo Lee. "An Analysis on the Helicopter Rotor Aerodynamics in Hover and Forward Using CFD/Time-Marching-Free-Wake Coupling Method." International Conference on Computational Fluid Dynamics5, Seoul, July 7, 2008.  
2008 Ji Sung Jang and Duck Joo Lee. "Experimental Study of a Model Helicopter in Partially Inclined Ground Effect.” 4th International Conference on vortex flows and models (ICVFM2008), Daejeon, South Korea, April 21-23, 2008.  
2008 In Cheol Lee and Duck Joo Lee. "An Analysis of Transient Motion and Characteristics of Screech Tone in Three Dimensional Simulations.” 4th International Conference on vortex flows and models (ICVFM2008), South Korea, April 21-23, 2008.  
2008 Seong Yong Wie, Duck Joo Lee, Dong Kyun Im, Eugene Kim, Jang Hyuk Kwon, J. H. Chung, and Sang Bok Kim. "An Analysis on the Helicopter Rotor Aerodynamics in Hover and Forward Using CFD/Time-Marching-Free-Wake Coupling Method." International Conference on Computational Fluid Dynamics5, Seoul, July 7, 2008.  
2008 Chi Hoon Cho, Duck Joo Lee, Cyrille Breard, John Premo, and Justin Lan, “Time-domain simulation of nonlinear acoustic propagation in a lined duct.” 14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference), Vancouver, BC, Canada, May 5-6, 2008.  
2008 Jong Bong Yim and Duck Joo Lee. "Vortex Instability and Leap-Frogging Motion.” 4th International Conference on vortex flows and models, South Korea, April 21-23, 2008.  
2008 Won Ju Jeon and Duck Joo Lee. "Theoretical Consideration of Acoustic Shielding by Empennage." 2008 KSAS-JSASS Joint International Symposium on Aerospace Engineering, Jeju Ramada Hotel, South Korea, November 20, 2008.  
2008 Won Ju Jeon and Duck Joo Lee. "The Role of Generalized Gamma Function in Mathematical Theory of Diffraction." The 15th International Conference on Sound and Vibration, Daejeon Convention Center, South Korea, July 7, 2008.  
2008 Dong Kyun Im, Seong Yong Wie, Eu Gene Kim, Jang Hyuk Kwon, Duck Joo Lee, Ki Hoon Chung, and Seung Bum Kim. "Aerodynamic Analysis of Rotor Blades Using Overset Grid with Parallel Computation." 20th International Series of Meetings on Parallel Computational Fluid Dynamics, CFD 2008, Lyon, France, May 19-22, 2008.  
2007 Joon Seok Lee, Chi Hoon Cho, and Duck Joo Lee. "Development of Adaptive Moving Overset Grid Technique for CAA.” International Forum on Rotorcraft Multidisciplinary Technology, Seoul, South Korea, Oct. 15-17, 2007.  
2007 Kyu Young Kim and Duck Joo Lee. "Noise Prediction of Axial Fan with Rotating Shroud.” International Forum on Rotorcraft Multidisciplinary Technology, Seoul, South Korea, 2007.  
2007 Seong Yong Wie, Dong Kyun Im, Jang Hyuk Kwon, Duck Joo Lee, Ki Hoon Chung, and Seung Bum Kim. "A Study on the Far-Field Boundary Condition Effects of CFD/Time-Marching-Free-Wake Coupled Method.” International Forum on Rotorcraft Multidisciplinary Technology, Seoul, South Korea, Oct. 15-17, 2007.  
2006 Won Ju Jeon and Duck Joo Lee. "Further improvement on mathematical and physical analysis of acoustic diffraction by a finite strip.” The 9th Western Pacific Acoustics Conference, Seoul, South Korea, June 25-28, 2006.  
2006 Chi Hoon Cho, Duck Joo Lee, and Chang Jeon Hwang. "Numerical investigations of parallel BVI noise with split tip vortices.” AHS Internaitonal 62nd Annual Forum, Phoenix, AZ, United States, May 9-11, 2006.  
2006 Seong Yong Wie, Chi Hoon Cho, and Duck Joo Lee. "Numerical investigation about blade vortex interaction using vortex embedded CAA method.” The 9th Western Pacific Acoustics Conference, South Korea, June 25-28, 2006.  
2006 Ki Hoon Chung, Chang Jeon Hwang, Won Ju Jeon, and Duck Joo Lee. "Blade vortex interaction noise prediction of the isolated rotor of a helicopter.” The 9th Western Pacific Acoustics Conference, Seoul, South Korea, June 25-28, 2006.  
2006 In Cheol Lee and Duck Joo Lee. "Numerical Simulation of Supersonic Screech Tone Noise using Highorder, High-resolution Optimized Compact Scheme.” Parallel CFD 2006, Busan, South Korea, May 15-18, 2006.  
2006 Seong Yong Wie, Ki Hoon Chung, and Duck Joo Lee. "Investigation of BVI noise generations using Free Wake embedded Computational Aeroacoustics.” Heli-Japan, Nagoya, Japan, November 15-17, 2006.  
2006 In Cheol Lee, Chi Hoon Cho, and Duck Joo Lee. "Visualization of aeroacoustics using CAA (Computational Aeroacoustics).” The 9th Western Pacific Acoustics Conference, South Korea, June 25-28, 2006.  
2006 C. H. Cho, D. J, Lee, and Y.H. Yu. "Simulations of BVI noise generation using Computational Aeroacoustics.” Internoise 2006, HONOLULU, United States, December 3-6, 2006.  
2006 In Cheol Lee and Duck-Joo Lee. "Investigation of supersonic jet screech tones using an optimized compact scheme.” The 9th Western Pacific Acoustics Conference, South Korea, June 25-28, 2006.  
2006 In Cheol Lee and and Duck Joo Lee. "Numerical analysis of a blast wave using CFD-CAA hybrid method.” 12th AIAA/CEAS Aeroacoustics Conference, Cambridge, MA, United States, May 8-10, 2006.  
2005 In Cheol Lee and Duck Joo Lee. "Analysis of Interaction between Vortex and Shock Cell in Supersonic Jet.” 3rd International Conference on Vortex Flows and Vortex Models (ICVFM2005), Yokohama university, Japan, Novembr 21-23, 2005.  
2005 Ki Hoon Chung, Chang Jeon Hwang, Young Min Park, Won Ju Jeon, and Duck Joo Lee. "Numerical predictions of rotorcraft unsteady air-loadings and BVI noise by using a time-marching free-wake and acoustic analogy.” 31st European Rotorcraft Forum, Florence, Italy, September 13-15, 2005.  
2005 Chi Hoon Cho, Chang Jeon Hwang, and Duck Joo Lee. "Investigation of parallel blade vortex interaction with split tip vortices.” 3rd International Conference on Vortex Flows and Vortex Models (ICVFM2005), Yokohama university, Japan, November 21-23, 2005.  
2005 Seong Yong Wie, Chi Hoon Cho, and Duck Joo Lee. "Validation of free-vortex embedded CAA method for airfoil vortex interaction.” American helicopter society, United States, January 1, 2005.  
2005 In Cheol Lee and Duck Joo Lee. "Study on screech tone noise using CAA.” 3rd International Conference on Vortex Flows and Vortex Models (ICVFM2005), Yokohama university, Japan, November 21-23, 2005.  
2005 Chi Hoon Cho, Chang Jeon Hwang, and Duck Joo Lee. "Investigation of parallel blade vortex interaction with split tip vortices.” 3rd International Conference on Vortex Flows and Vortex Models (ICVFM2005), Yokohama university, Japan, November 21-23, 2005.  
2005 Ki Hoon Chung, Chang Jeon Hwang, Jong Bong Yim, and Duck Joo Lee. "Tip-vortex instability during the transition from hover to forward flight.” American helicopter society, United States, January 1, 2005.  
2005 Kyung Hwan Baik and Duck Joo Lee. "Experimental set-up to parallel blade vortex interaction with trailing edge flap at low speed.” American helicopter society, United States, January 1, 2005.  
2005 I. C. Lee, S. H. Ko, S. D. Woo, K. J. Kang, I. W. Kim, and D. J. Lee. "Study on blast noise in supersonic flow.” The 2005 Congress and Exposition on Noise Control Engineering, Rio de Janeiro, Brazil, August 6-10, 2005.  
2005 Jong Bong Yim, Ki Hoon Chung, and Duck Joo Lee. "A prediction of transient behavior using various vortex ring modeling.” 3rd International Conference on Vortex Flows and Vortex Models (ICVFM2005), Yokohama university, Japan, November 21-23, 2005.  
2005 Won Ju Jeon and Duck Joo Lee. "A theoretical study of acoustic diffraction by a finite strip in uniform flow.” 11th AIAA/CEAS Aeroacoustics Conference, Monterey, United States, May 23-25, 2005.  
2004 Han Lim Choi, Ki Hoon Chung, and Duck Joo Lee. "Duct effects on rotor noise in radiation.” 60th Annual Forum Proceedings - American Helicopter Society, Baltimore, MD, United State, June 7-10, 2004.  
2004 Won Ju Jeon and Duck Joo Lee. "Acoustic interaction between leading and trailing edges of a strip in convected medium.” 10th AIAA/CEAS Aeroacoustics Conference, Manchester, United Kingdom, May 10-12, 2004.  
2004 Renjing Cao and Duck Joo Lee. "Characterising the aerodynamic and aeroacoustic performance for a small axial-flow fan.” 2004 ASME Turbo Expo, Vienna, Austria, June 14-17, 2004.  
2004 Dae Nyoung Heo, In Cheol Lee, Jae Wook Kim, and Duck Joo Lee. "CAA Application for the Feedback Mechanism in Cavity and Jet.” 18th International Congress on Acoustics, Kyoto, Japan, April 4-9, 2004.  
2004 In Cheol Lee, Jae Wook Kim, and Duck Joo Lee. "An analysis of screech tone noise and its mode change of an axisymmetric supersonic jet using an optimized compact scheme.” 10th AIAA/CEAS Aeroacoustics Conference, Manchester, United Kingdom, May 10-12, 2004.  
2003 Dae Nyoung Heo, Jae Wook Kim, and Duck Joo Lee, "Study on noise characteristics of open cavity with cross-correlation analysis." 9th AIAA/CEAS Aeroacoustics conference and Exhibit, South Carolina, USA, 12-14 May, 2003.   
2003 Ki Hoon Chung, Han Lim Choi, Wonju Jeon, Byung Joo Kim, Sang Kyu Kang, Kyu Young Kim, Duck Joo Lee, Young Nam Kim, Jin Wook Lee, Seon Uk Na, Sang Kyung Oh, and Sung Kwan Park. "Integrated Fan Design Program by Using Numerical Prediction Methods for High Performance and Low Noise Fan.” Inter-Noise 2003, Jeju, South Korea, August 25-28, 2003.   
2003 Kyu Young Kim, Min Goo Choi, and Duck Joo Lee. "Experimental Study of Noise Reduction and Improved Cooling Fan Performance in a PDP TV.” Fan-noise 2nd international symposium, Senlis, France, September 23-25, 2003.  
2003 Dae Nyoung Heo, Jae Wook Kim and Duck Joo Lee, "Numerical study on mode transition of open cavity with lids." The 32nd International Congress and Exposition on Noise Control Engineering, Jeju, Korea, August 25-28, 2003.  
2003 Ki Hoon Chung, Han Lim Choi, Won Ju Jeon, and Duck Joo Lee. "Prediction of Noise Radiation from a Fan System: Connection between Generation and Propagation.” Fan noise 2nd international symposium, Senlis, France, September 23-25, 2003.  
2003 K. H. Chung, H. L. Choi, W. J. Jeon, B.J. Kim, S.K. Kang, K.Y. Kim, D. J. Lee, Y.N. Kim, J.W. Lee, S.U. Na, S.K. Oh, S.K. Park. "Development of fan design program for high performance and low-noise fan.” Fan-noise 2nd international symposium, Senlis, France, September 23-25, 2003.  
2003 Jae Wook Kim and Duck Joo Lee. "Characteristic Interface Conditions for Multi-Block High-Order Computation on Singular Structured Grid.” 9th AIAA/CEAS Aeroacoustics conference and Exhibit, South Carolina, USA, 12-14 May, 2003.   
2003 Han Lim Choi, Ki Hoon Chung, Won Ju Jeon, Bum Sub Kim, Sung Gyu Lee and Duck Joo Lee, "Noise Prediction for a Boxed Fan System." The 32nd International Congress and Exposition on Noise Control Engineering, Jeju, Korea, August 25-28, 2003.  
2003 Kyu Young Kim, Min Goo Choi, and Duck Joo Lee, "Experimental Study of Noise Reduction in a Plasma Display Panel Television." The 32nd International Congress and Exposition on Noise Control Engineering, Jeju, Korea, August 25-28, 2003.  
2002 Won Ju Jeon and Duck Joo Lee. "A theoretical study of plane wave scattering by a finite strip in the presence of uniform flow." International Conference on Mathematical theory in Electromagnetic Theory, Kiev, Ukraine, September 10-13, 2002.  
2002 Jae Wook Kim, Philip Morris and Duck Joo Lee. "Numerical Simulation of Subsonic Inviscid Flow past a Cone Using High-Order Finite Difference Schemes."Korea-Japan Joint Symposium: JSASS 16th International Sessions, Yokohama, Japan, October, 2002.  
2002 Wan Ho Jeon, Ki Hoon Chung and Duck Joo Lee, "Development and application of fan noise prediction method to axial and centrifugal fan." Proceedings of the 2002 ASME Joint U.S.-European Fluids Engineering Conference, Montreal, Que., Canada, July 14-18, 2002.  
2002 Han Lim Choi and Duck Joo Lee, "A study for the reconstruction of acoustic free field from the measured data in a closed space by using boundary element method." 9th International Congress on Sound and Vibration, United States, July 8-11, 2002.  
2002 Won Ju Jeon and Duck Joo Lee. "Integral equations for the analysis of scattering by a finite strip." 9th International Congress on Sound and Vibration, Florida, United States, July 8-11, 2002.  
2002 Jae Wook Kim, Philip Morris, and Duck Joo Lee. "Noise Generation and Propagation from Subsonic Inviscid Flow past a Cone." IMA Conference on Computational Aeroacoustics, United Kingdom, April 9-11, 2002.  
2001 Won Ju Jeon and Duck Joo Lee. "Theoretical study of scattering problem with 3-part mixed boundary conditions."7th AIAA/CEAS Aeroacoustics Conference, Maastricht, Netherlands, May 28-30, 2001.  
2001 Dae Nyoung Heo and Duck Joo Lee. "Numerical investigation of the cover-plates effects on the rectangular open cavity." 7th AIAA/CEAS Aeroacoustics Conference, Maastricht, Netherlands, May 28-30, 2001.  
2001 Ki Hoon Chung, Ki Wahn Ryu, and Duck Joo Lee. " Sound Generation and Radiation from Rotor Tip-Vortex Pairing Phenomenon." 57th AHS Annual Forum, Washington, DC, USA, May 9-11, 2001.  
2000 Wan Ho Jeon and Duck Joo Lee. "An Analysis of Sound Field of a Centrifugal Fan with Volute Casing." 6th AIAA/CEAS Aeroacoustics Conference and Exhibit, Bellevue, USA, June 12-14, 2000.  
2000 Wan Ho Jeon, Ki Hoon Chung, and Duck Joo Lee. "Development of Fan Performance, Flow and Acoustic Field Analysis Software." The 29th International Congress and Exhibition on Noise Control Engineering, Nice, France, August 27-30, 2000.  
2000 Wan Ho Jeon and Duck Joo Lee. "An Analysis of Generation and Radiation of sound for a Centrifugal Fan", IIAV/IUTAM, Germany, July 4-7, 2000.  
2000 Wan Ho Jeon, Ki Hoon Chung, and Duck Joo Lee. "Development of Fan Noise Prediction Software."The 7th International Congress on Sound and Vibration, Germany, July 04-07, 2000.  
2000 Ki Hoon Chung , Wan Ho Jeon, and Duck Joo Lee. "A Study on Rotor Tip Vortex Pairing Phenomenon by Using a Time-Marching-Free-Wake Method." American Helicopter Society 56th Annual Forum, United States , May 2-4, 2000.  
2000 Jae Wook Kim and Duck Joo Lee. "Adaptive Nonlinear Artificial Dissipation Model for Computational Aeroacoustics." 21st AIAA Aeroacoustics Conference, Lahaina, HI, June 12-14, 2000.  
2000 Wan Ho Jeon and Duck Joo Lee. "An Analysis of Flow and Sound Field of a Ducted Axial Fan." The 29th International Congress and Exhibition on Noise Control Engineering, Nice, France, August 27-30, 2000.  
2000 Yong Seok Kim, Dae Nyoung Heo, and Duck Joo Lee. "A Study on the reduction method of noise sources in high speed rotating CD-ROM Drive." The 29th International Congress and Exhibition on Noise Control Engineering, Nice, France, August 27-30, 2000.  
2000 Wan Ho Jeon, Han Lim Choi, and Duck Joo Lee. "Formulation and Validation of Lighthill-Helmholtz Relation for Scattering Problems in Aeroacoustics." 6th AIAA/CEAS Aeroacoustics Conference, Hawaii, June 12-14, 2000.  
1999 Duck Joo Lee. "Numerical Prediction of Rotor Tip Vortex Roll-Up in Axial Flight by Using a Time-Marching Tre-Wake Method." International Conference on Vortex Methods, Japan, November 4-5, 1999.  
1999 Wan Ho Jeon and Duck Joo Lee. "An Analysis of the Flow and Sound Field of a Centrifugal Fan Located Near a Wedge."5th AIAA/CEAS Aeroacoustics Conference, Seattle, United States, May 10-12, 1999.  
1999 Jae Wook Kim and Duck Joo Lee. "Direct Simulation of Sound Generation and Radiation from a Singing Wire." The 137th Acoustic Society of America, United States, March 4, 1999.  
1999 Yong Seok Kim and Duck Joo Lee. "Numerical Prediction of I.C.Engine Intake Noise with a Moving Piston and a Valve." 5th AIAA/CEAS Aeroacoustics Conference and Exhibit, Bellevue, USA, May 10-12, 1999.  
1999 In Bo Shim, Jae Wook Kim, and Duck Joo Lee. "Numerical Study on Radiation of Multiple Pure Tone Noise from and Aircraft Engine Inlet." 5th AIAA/CEAS Aeroacoustics, Seattle, United States, , May 10-12, 1999.  
1999 Duck Joo Lee. "Numerical Simulation of Sound Generation and Radiation of Intake System by Using Essentially Non-oscillatory Schemes." 5th AIAA/CEAS Aeroacoustics Conference and Exhibit, United States, May 10-12, 1999.  
1998 Wan Ho Jeon and Duck Joo Lee. "An application of similarity laws to the blade passage sound of centrifugal fan by numerical calculation." 4th KSME-JSME Fluids Engineering Conference, Busan, Korea , October 18-21, 1998.  
1998 Jae Wook Kim and Duck Joo Lee. "Generalized Formulation and Application of Characteristic Boundary Conditions." 4th AIAA/CEAS Aeroacoustics Conference, Toulouse, France, June 2-4, 1998.  
1998 Seon UK Na, Ki Hoon Chung, and Duck Joo Lee. "Predictions of Air Loadings and Wake Structures of Rotating Blades in Vertical Flights by Using Time-Marching Free-Wake Method Strongly Coupled with Nonlinear Rotor Dynamics." Heli Japan 98, Japan, April 21-23, 1998.  
1997 Duck-Joo Lee and Hyeong-kook Lee, "Flow-tone Generation in an Axisymmetric Whistle," INTER-NOISE and NOISE-CON Congress and Conference Proceedings, InterNoise97, Budapest Hungary, pp. 753-756.  
1997 Seon Uk Na, Ki Hoon Chung, Choon Myun Chung, and Duck Joo Lee. "Predictions of Unsteady-Loading Noise for Slowly Descent Flights with a Time-Marching Free-Wake and Articulated Rotor." AHS International Technical Specialist Meeting, United States, October 14-16, 1997.  
1997 Chang Jeon Hwang and Duck Joo Lee, "Numerical Simulations of High Speed Train Impulsive Noise Using an Unsteady Deforming Mesh Algorithm." High Performance Computing on the Information Superhighway HPC Asia’97, Seoul, Korea, April28-May 2, 1997.  
1997 Yong Seok Kim and Duck Joo Lee. "Numerical Study on the Radiation of Intake Noise from Internal Combustion by using Essentially Non-Oscillatory Schemes." The 5th International Congress on Sound and Vibration, Adelaide, South Australia, December 15-18, 1997.  
1997 Yong Seok Kim, Kang Seok Chae, and Duck Joo Lee. "Numerical visualization of generation and radiation of intake noise from internal combustion engine by using essentially nonoscillatory schemes." 5th International Congress on Sound and Vibration, Adelaide Australia, December 15-18, 1997.   
1997 Jae Wook Kim and Duck Joo Lee. "Implementation of Boundary Conditions for the High Order Optimized Compact Schemes." 2nd AIAA/CEAS Aero Acoustic Conference, May 6-8, 1997.  
1997 Jae Wook Kim and Duck Joo Lee. "Numerical Computation of Exhaust Noise through Perforated Diffuser Using Optimized High-Order Compact Schemes." The 5th International Congress on Sound and Vibration, Adelaide, South Australia, December 15-18, 1997.  
1997 Seung Chul Kwak, Ho Seon Rew, and Duck Joo Lee. "Characteristic Boundary Conditions and Its Application to Resonance Tube." The 24th International Congress on Sound and Vibration, Australia , December 15-18, 1997.  
1997 Wan Ho Jeon and Duck Joo Lee. "An Analysis of Flow and Sound Source of an Annular Type Centrifugal Fan." The 24th International Congress on Sound and Vibration, Australia , December 15-18, 1997.  
1996 Duck Kon Ko and Duck Joo Lee. "Comparison of High-Order ENO Schemes for Compressible Flows." Asian CFD Conference Japan Serial 2, Japan, September 2-6, 1996.  
1996 Seon Uk Na and Duck Joo Lee. "Predictions of Airloads and Wake Geometry for Slowly Starting Rotor Blades in Hovering Flight by using Time Marching Free Vortex Blob Method." American Helicopter Society 52nd Annual Forum, Part 1 (of 3), Washington, DC, United States, June 4, 1996.  
1996 Sam Ok Koo, Ki Wahn Ryu, and Duck Joo Lee. "Sound Generation Due to a Spinning Vortex Pair near the Flat and Curved Wall." 2nd AIAA/CEAS Aero Acoustic Conference, State College, PA, United States, May 6-8, 1996.  
1996 Kang Duck Ih and Duck Joo Lee. "Diffraction by Thin-Walled Shapes of Revolution with Compliant Boundary Conditions by Using the Direct Boundary Element Method." 34th AIAA Aerospace Sciences Meeting, United States, January 15-18, 1996.  
1996 Jae Wook Kim and Duck Joo Lee. "Optimized High-Order Compact Schemes for Linear and Nonlinear Wave Generation and Propagation." The 4th International Congress on Sound and Vibration, Russia, July 24-27, 1996.  
1996 Duck Joo Lee and Ki Wahn Ryu. "Sound Generation from Evolution of Elliptic Vortex Ring and a Vortex Ring Intergration with a Rigid Sphere." 34th AIAA Aerospace Science Meeting, Reno, United States, January 15-18, 1996.  
1996 Duck Kon Ko and Duck Joo Lee. "High-Resolution, Nonoscillatory Schemes with Modified ACM Method for Compressible Flow." 2nd AIAA/CEAS Aero Acoustic Conference, State College, PA, United States, May 6-8, 1996.  
1996 Duck Joo Lee. "Third Order Uniformly Non-Oscillatory Schemes with Modified ACM Technique for Linear Wave and Euler Equation." 2nd AIAA/CEAS Aero Acoustic Conference, May 6-8, 1996.  
1995 Seon Uk Na and Duck Joo Lee. "High Resolution Free Vortex Blob Method for Highly Distorted Vortex Wake Generated from a Slowly Starting Rotor Blade in Hover." 21st European Rotor Craft Forum, St. Petersburg, Russia, September, 1995.  
1995 Jae Wook Kim and Duck Joo Lee. "Optimized Compact Finite Difference Schemes for Solving Wave Equations." 1st CEAS/AIAA Aeroacoustics Conference, Munchen, Germany, June 1995.  
1995 Duck Joo Lee and Chang Jeon Hwang. "Numerical Predictions of Acoustic Wave Propagation and Radiation through a Semi-Infinite Tunnel." The 6th Asian Congress of Fluid Mechanics, Singapore, May 22-26, 1995.  
1995 Jae Wook Kim and Duck Joo Lee. "Optimized Compact Finite Difference Scheme." 1st Asian Computational Fluid Dynamics Conference, Hong Kong, China, January 1, 1995.  
1994 Jin Ho Park and Duck Joo Lee. "Numerical Simulations of Two-Dimensional Vortex-Body Interaction Using a Vortex Method." The 3rd JSME-KSME Fluids Engineering Conference, Sendai, Japan, July 25-27, 1994.  
1994 Chang Jeon Hwang, Duck Kon Ko, Jae Wook Kim, and Duck Joo Lee. "Comparative Study of Numerical Schemes of TVD3, UNO3-ACM and Optimized Compact Scheme." ICASE/LaRC Workshop on Benchmark Problems in Computational Aeroacoustics, Hampton; VA, United Kingdom, October 24-26, 1994.  
1994 Seon Uk Na and Duck Joo Lee. "Predictions of Helicopter Wake Geometry and Air Loadings by Using a Time Marching Free Wake Method." 1st Forum Russia Helicopter Society, Moscow, Russian Federation, September 20-21, 1994.  
1994 Ki Wahn Ryu and Duck Joo Lee. "Numerical Simulation of Evolutions of a Vortex Ring and its Interactions with a Rigid Sphere." AIAA 34th Aerospace Sciences Meeting and Exhibition, Reno, NV, January 15-18, 1994.  
1993 Jin Ho Park and Duck Joo Lee, "Effect of Secondary Vortex on Acoustic Radiation." Proceedings of 93 Inter Noise, Leuven, Belgium, August 24-26, 1993.  
1993 Duck Kon Ko and Duck Joo Lee. "Third Order UNO Schemes with an ACM for Linear Waves and Euler Equations." The 5th International Symposium on Computational Fluid Dynamics, Sendai, Japan, August 31-September 3, 1993.  
1993 Sam Ok Koo and Duck Joo Lee. "Numerical Study of Sound Generation Due to a Spinning Vortex Pair." 15th Aeroacoustics Conference, Long Beach, CA, October 25-27, 1993.  
1992 Chang Jeon Hwang, Duck Kon Ko, and Duck Joo Lee. "Numerical Simulation of Acoustic Wave Propagation through a Moving Medium at Transonic Speed." The Fifth Asian Congress of Fluid Mechanics, Daejon, Korea, August 10-14, 1992.  
1991 Kang Duck Lee and Duck Joo Lee. "Numerical Simulation of Scattering Problems by Using a Boundary-Element-Method.” Proceedings of 91 Inter Noise, Sydney, December 2-4, 1991.  
1991 Chun Meun Chung, Seung Cheol Park, and Duck Joo Lee. "Interference effect on Rotor Thickness Noise." AHS International Technical Specialist Meeting; Rotorcraft Acoustics and Rotor Fluid Dynamics, Valley Forge, PA, October 15-17, 1991.  
1990 Jin Ho Park and Duck Joo Lee. "Application of Hybrid Random Method for the Viscous Flow over a Flat Plate in the presence of an Airfoil." The Second KSME/ JSME Fluids Engineering, Seoul, South Korea, October, 1990.  
1990 Young Nam Kim, Jin Ho Park, and Duck Joo Lee. "Numerical Study of Vortex-Wedge Interaction." AIAA 13th Aeroacoustics Conference, Tallahassee, FL, October 22, 1990.  
1989 Kang Seok Chae and Duck Joo Lee, "Calculation of Vortex-Airfoil-Interaction by Using Vortex-In-Cell Method." The 27th Aircraft Symposium, Kyushu, October 18-20, 1989.  
1988 Duck Joo Lee. "Surface Pressure Fluctuations due to Impinging Vortical Flows upon an Airfoil." 1st National Fluid Dynamics Congress, Cincinnati, Ohio, July 24-28, 1988.  
1987 D. J. Lee and C.A. Smith. "Distortion of the Vortex Core during Blade/Vortex Interaction." AIAA 19th Fluid Dynamics, Plasma Dynamics and Lasers Conference, Honolulu, Hawaii, June 8-10, 1987.  
1985 D. J. Lee and L. Roberts. "Interaction of a Turbulent Vortex with a Lifting Surface." AIAA 23rd Aerospace Science Meeting, Reno, NV, January 14-18, 1985  
1984 D. J. Lee and S.E. Wright. "Prediction of Sources Moving at High Speed as Applied to Helicopter Noise." AIAA 22nd Aerospace Science Meeting, Reno, NV, January 9-12, 1984.  
1983 D. J. Lee, S.E. Wright, and W. Crosby. "Acoustic Measurements on Aerofoils Moving in a Circle at High Speed." AIAA 8th Aeroacoustics Conference, Atlanta, Georgia, April 11-13, 1983.  
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