Seongkyu Lee

UC Davis Mechanical and Aerospace Engineering logo
Menu

Publications

Google Scholar: https://scholar.google.com/citations?user=bIPx33MgXdsC&hl=en
Scopus: https://www.scopus.com/authid/detail.uri?authorId=24479434200

Journal Publications (* indicates students of Prof. Lee)

  1. J. Sagaga* and S. Lee, “High-Fidelity Computational Study of Aerodynamic Noise of Side-by-Side Rotor in Full Configuration”, under review, 2023.
  2. J. Shum* and S. Lee, “Computational Study of Airfoil Design Parameters and Sensitivity Analysis for Dynamic Stall under Pitching Motion”, under review, 2023.
  3. D. Kang* and S. Lee, “Effect of Boundary-Layer Tripping on Airfoil Noise in Numerical Simulations”, under review, 2023.
  4. S. Li* and S. Lee, “Analytic Prediction of Rotor Broadband Noise with Serrated Trailing Edges with Applications to Urban Air Mobility Aircraft,” under review, 2023. 
  5. J. Sagaga* and S. Lee, “Performance, Aerodynamics, and Aeroacoustics of Side-by-Side Air Taxi Rotors in Hover Using High-Fidelity CFD”, AIAA Journal, accepted for publication, 2023.
  6. D. Kang*, S. Lee, D, Brouzet, and S. K. Lele, “Wavelet-based Pressure Decomposition for Airfoil Noise in Low-Mach Number Flows”, Physics of Fluids, Vol. 35 (7), pp. 075112, 2023. (Invited) [link]
  7. S. Lee, D. Kang*, D, Brouzet, and S. K. Lele, “Airfoil Trailing-Edge Noise Source Identification Using Large-Eddy Simulation and Wavelet Transform”, Center for Turbulence Research, Proceedings of the Summer Program, 2022. [link]
  8. J. Batther* and S. Lee, “Numerical Investigation of Dynamic Stall Using Delayed Detached Eddy Simulations”, Computers and Fluids, Vol. 249, pp. 105691, 2022. [link]
  9. H. Gill* and S. Lee, “Effect of 2D Ice Accretion on Turbulent Boundary Layer and Trailing-Edge Noise”, International Journal of Aeroacoustics, Vol. 21 (3-4), 2022, pp. 260-285. [link]
  10. S. Li* and S. Lee, “Acoustic Analysis and Sound Quality Assessment of a Quiet Helicopter for Air Taxi Operations”, Journal of the American Helicopter Society, Vol. 67, pp. 032001, 2022. [link]
  11. Z. Jia* and S. Lee, “High-Fidelity Computational Analysis on the Noise of a Side-by-Side Hybrid VTOL Aircraft,” Journal of the American Helicopter Society, Vol. 67, pp. 022005, 2022. [link]
  12. C. Liu* and S. Lee, “Parametric Airfoil Design and Sensitivity Analysis for Turbulent Boundary Layer Trailing-Edge Noise Reduction,” AIAA Journal, Vol. 60 (4), 2022, pp. 2324-2341. [link] 
  13. Z. Jia* and S. Lee, “Computational Study on Noise of Urban Air Mobility Quadrotor Aircraft,” Journal of the American Helicopter Society, Vol. 67, pp. 012009, 2022. [link]
  14. S. Lee, L. Ayton, F. Bertagnolio, S. Moreau, T. P. Chong, and P. Joseph, “Turbulent Boundary Layer Trailing-Edge Noise: Theory, Computation, Experiment, and Application,” Progress in Aerospace Sciences, Vol. 126, pp. 100737, 2021. [link]
  15. S. Li* and S. Lee, “Prediction of Urban Air Mobility Multi-Rotor VTOL Broadband Noise Using UCD-QuietFly,” Journal of the American Helicopter Society, Vol. 66, pp. 032004, 2021. [link]
  16. Z. Jia* and S. Lee, “Aerodynamically Induced Noise of a Lift-Offset Coaxial Rotor with Pitch Attitude in High-Speed Forward Flight,” Journal of Sound and Vibration, Vol. 491, pp. 115737, 2021. [link]
  17. S. Li* and S. Lee, “Prediction of Rotorcraft Broadband Trailing-Edge Noise and Parameter Sensitivity Study,” Journal of the American Helicopter Society, 65, 042006, 2020. [link]
  18. S. Lee and M. Dassonville*, “Iterative Blade Element Momentum Theory for Predicting Coaxial Rotor Performance in Hover,” Journal of the American Helicopter Society, 65, 042005, 2020. [link]
  19. Y. Shi* and S. Lee, “Numerical Study of 3-D Finlets Using RANS CFD for Trailing Edge Noise Reduction,” International Journal of Aeroacoustics, Vol. 19 (1-2), 2020. pp. 95-118. [link]
  20. Z. Jia*, S. Lee, K. Sharma and K.S. Brentner, “Aeroacoustic Analysis of a Lift-Offset Coaxial Rotor Using High-Fidelity CFD/CSD Loose Coupling Simulation,” Journal of the American Helicopter Society, 65, 012011, 2020. [link]
  21. Z. Jia* and S. Lee, “Impulsive Loading Noise of a Lift-Offset Coaxial Rotor in High-Speed Forward Flight,” AIAA Journal, Vol. 58 (2), February, 2020. pp. 687-701. [link]
  22. Y. Shi* and S. Lee, “Airfoil Trailing Edge Noise Reduction Using a Boundary-Layer Bump,”Acta Acustica united with Acustica, Vol. 105 (5), 2019, pp. 814-826. [link]
  23. D. Qin*, G. Pan, S. Lee, Q. Huang and Y. Shi, “Underwater Radiated Noise Reduction Technology Using Sawtooth Duct for Pumpjet Propulsor,” Ocean Engineering, Vol. 188, 2019, pp. 106228 (15 pages). [link]
  24. P. Wei, S.N. Chan, S. Lee and Z. Kong, “Mitigating Ground Effect on Mini Quadcopters with Model Reference Adaptive Control,” International Journal of Intelligent Robotics and Applications, Vol. 3 (3), 2019, pp. 283-297. [link]
  25. S. Lee, “The Effect of Airfoil Shape on Trailing Edge Noise,” Journal of Theoretical and Computational Acoustics, Vol. 27 (2), 2019, pp. 1850020 (26 pages)  [link]
  26. S. Lee and J.G. Shum*, “Prediction of Airfoil Trailing Edge Noise Using Empirical Wall Pressure Spectrum Models,” AIAA Journal, Vol. 57 (3), March, 2019, pp. 888-897. [link]
  27. S. Lee, “Empirical Wall-Pressure Spectral Modeling for Zero and Adverse Pressure Gradient Flows,” AIAA Journal, Vol. 56 (5), May, 2018, pp. 1818-1829. [link]
  28. S. Lee, K.S. Brentner and P.J. Morris, “Long-Range and Nonlinear Propagation of Helicopter High-Speed Impulsive Noise,” Journal of the American Helicopter Society, Vol. 62 (2), April-June, 2017, pp. 022007 (10 pages). [link]
  29. S. Lee, “Review: The Use of Equivalent Source Method in Computational Acoustics,” Journal of Computational Acoustics, Vol. 25 (1), March. 2017, pp. 1630001 (19 pages). [link]
  30. S. Lee, D. Lee and S. Honhoff, “Prediction of Far-Field Wind Turbine Noise Propagation with Parabolic Equation,” Journal of the Acoustical Society of America, Vol. 140 (2), Aug. 2016, pp. 767-778. [link]
  31. S. Lee and K.S. Brentner, “Comment on Acoustic Pressure Gradient and Velocity Formulations,” AIAA Journal, Vol. 54 (5), May 2016, pp. 1809-1810. [link]
  32. S. Lee, “Inverse Design of Horizontal Axis Wind Turbine Blades Using a Vortex Line Method,” Wind Energy, Vol. 18 (2), Feb. 2015, pp. 253-266. [link]
  33. S. Lee, K.S. Brentner and P.J. Morris, “Time-domain Approach for Acoustic Scattering of Rotorcraft Noise,” Journal of the American Helicopter Society, Vol. 57 (4), Oct-Dec. 2012, pp. 1-12 (12). [link]
  34. S. Lee, K.S. Brentner and P.J. Morris, “Assessment of Time-Domain Equivalent Source Method for Acoustic Scattering,” AIAA Journal, Vol. 49 (9), Sep. 2011, pp. 1897-1906. [link]
  35. S. Lee, K.S. Brentner and P.J. Morris, “Acoustic Scattering in the Time Domain Using an Equivalent Source Method,” AIAA Journal, Vol. 48 (12), Dec. 2010, pp. 2772-2780. [link]
  36. S. Lee, P.J. Morris and K.S. Brentner, “Improved Algorithm for Nonlinear Sound Propagation with Aircraft and Helicopter Noise Applications,” AIAA Journal, Vol. 48 (11), Nov. 2010, pp. 2586-2595. [link]
  37. S. Lee, J.P. Erwin and K.S. Brentner, “A Method to Predict Acoustic Scattering of Rotorcraft Noise,” Journal of the American Helicopter Society, Vol. 54 (4), Oct-Dec. 2009, 042007. [link]
  38. S. Y. Wie, S. Lee, and D.J. Lee, “Potential Panel and Time-Marching Free-Wake Coupling Analysis for Helicopter Rotor,” Journal of Aircraft, Vol. 46 (3), May-June 2009, pp. 1030-1041. [link]
  39. S. Lee, K.S. Brentner, F. Farassat and P.J. Morris, “Analytic Formulation and Numerical Implementation of an Acoustic Pressure Gradient Prediction,” Journal of Sound and Vibration, Vol. 319 (3-5), Jan. 2009, pp. 1200-1221. [link]


Peer-Reviewed Conference Proceedings (* indicates students of Prof. Lee)

  1. T. Ramsarran, K.S. Brentner, N. Trembois*, E. Brown*, and S. Lee, “Evaluating Propeller-Wing Interactional Noise Predictions from a Medium-Fidelity Approach”, 6th Decennial VFS Aeromechanics Specialists’ Conference, Santa Clara, California, February 6-8, 2024. 
  2. D. Kang* and S. Lee, “A New Acoustic Source Identification and Visualization Method for Airfoil Noise Using Large-Eddy Simulations,” AIAA SciTech, Orlando, Florida, January 8-12, 2024.
  3. M. Ruh, A. Fletcher, D. Sarojini, M. Sperry, J. Yan,  L. Scotzniovsky, S. van Schie, M. Warner, N. Orndorff, R. Xiang, A. Joshy, H. Zhao, J. Krokowski, H. Gill*, S. Lee, Z. Cheng, Z. Cao, C. Mi, C. Silva, L. Wolfe, J. Chen, and J. Hwang, “Large-scale Multidisciplinary Design Optimization of a NASA Air Taxi Concept Using a Comprehensive Physics-based System Model ,” AIAA SciTech, Orlando, Florida, January 8-12, 2024.
  4. H. Gill* and S. Lee, “Development of New Empirical Rotor Broadband Noise Prediction Models for Urban Air Mobility Applications,” AIAA SciTech, Orlando, Florida, January 8-12, 2024.
  5. J. Miranda* and S. Lee, “Community Noise Impact of Urban Air Mobility Aircraft with Noise Propagation Effects,” AIAA Aviation Forum, San Diego, California, June 12-16, 2023. [link]
  6. D. Kang* and S. Lee, “A Revisit of Amiet’s Trailing-edge Noise Theory through Large-Eddy Simulations,” AIAA Aviation Forum, San Diego, California, June 12-16, 2023. (Selected as one of the top 5 best student papers in the aeroacoustics conference) [link]
  7. J. Sagaga* and S. Lee, “Acoustic Predictions for Side-by-Side Air Taxi in Full Configuration,” AIAA Aviation Forum, San Diego, California, June 12-16, 2023. [link] 
  8. J. Shum* and S. Lee, “Numerical Investigation of the Effect of Trailing-Edge Morphing on Dynamic Stall using Delayed Detached Eddy Simulation,” AIAA Aviation Forum, San Diego, California, June 12-16, 2023. [link] 
  9. J. Won* and S. Lee, “Towards Accurate Broadband Noise Predictions Using CFD”, 79th VFS International Annual Forum, West Palm Beach, Florida, May 16-18, 2023. [link]
  10. J. Sagaga* and S. Lee, “Acoustic Predictions for Side-by-Side Rotor with Ground Effect”, 79th VFS International Annual Forum, West Palm Beach, Florida, May 16-18, 2023. [link]
  11. N. Trembois*, S. Lee, T. Ramsarran, and K.S. Brentner, “Prediction of Interactional Aerodynamic Noise of Propellers and Wing Using High-Fidelity
    CFD”, 79th VFS International Annual Forum, West Palm Beach, Florida, May 16-18, 2023. [link]
  12. N. Orndorff, M. Sperry, L. Scotzniovsky, H. Gill*, D. Sarojini, J. Hwang, S. Lee, Z. Cheng, S. Zhao, and C. Mi, “Air-taxi Transition Trajectory Optimization Using Physics-based Aerodynamic, Acoustic, and Motor Models “, AIAA SciTech, National Harbor, MD, January 23-27, 2023. [link]
  13. D. Sarojini, M, Ruh, A.J. Joshy, J. Yan, A. Ivanov, L. Scotzniovsky, A. Fletcher, N. Orndorff, M. Sperry, V. Gandarillas, I. Asher, J. Chambers, H. Gill*, S. Lee, Z. Cheng, G. Rodrigues, S. Zhao, C. Mi, T. Nascenzi, T. Cuatt, T. Winter, A. Guibert, A. Cronk, H. Kim, S. Meng, and J. Hwang, “Large-Scale Multidisciplinary Design Optimization of an eVTOL Aircraft using Comprehensive Analysis”, AIAA SciTech, National Harbor, MD, January 23-27, 2023. [link]
  14. H. Gill*, S. Lee, M. Ruh, and J. Hwang, “Applicability of Low-Fidelity Tonal and Broadband Noise Models on Small-Scaled Rotors”, AIAA SciTech, National Harbor, MD, January 23-27, 2023. [link]
  15. D. Kang* and S. Lee, “On the Effect of Boundary-layer Tripping for Trailing-edge Noise Predictions”, AIAA SciTech, National Harbor, MD, January 23-27, 2023. [link]
  16. J. Shum* and S. Lee, “Effect of Airfoil Design Parameters on Deep Dynamic Stall under Pitching Motion”, AIAA SciTech, National Harbor, MD, January 23-27, 2023. [link]
  17. D. Kang* and S. Lee, “Assessment of Wavelet-based Separation Algorithms on Turbulent Boundary Layer Trailing-Edge Noise Prediction,” 11th International Conference on Computational Fluid Dynamics (ICCFD11), Maui, Hawaii, July 11-15, 2022. [link]
  18. S. Li* and S. Lee, “Extensions and Applications of Lyu and Ayton’s Serrated Trailing-Edge Noise Model to Rotorcraft,” 28th AIAA/CEAS Aeroacoustics Conference, Southampton, UK, June 14-17, 2022. [link] 
  19. D. Kang* and S. Lee, “Application of Wavelet Analysis to Trailing-Edge Noise,” 28th AIAA/CEAS Aeroacoustics Conference, Southampton, UK, June 14-17, 2022. [link]
  20. J. Batther* and S. Lee, “Investigation of Dynamic Stall Leading-Edge Flow Features at a Low Transitional Reynolds Number”, 78th VFS International Annual Forum, Fort Worth, Texas, May 10-14, 2022. [link] 
  21. S. Li* and S. Lee, “Analytic Prediction of Rotor Broadband Noise with Serrated Trailing Edges”, 78th VFS International Annual Forum, Fort Worth, Texas, May 10-14, 2022. (Nominated for the best paper in the acoustic session) [link] 
  22. H. Gill* and S. Lee, “Trailing-Edge Noise Predictions of Rotorcraft Airfoils”, 78th VFS International Annual Forum, Fort Worth, Texas, May 10-14, 2022. [link] 
  23. S. Li* and S. Lee, “Predictions and Validations of Small-Scale Rotor Noise Using UCD-QuietFly,” VFS Aeromechanics for Advanced Vertical Flight Technical Meeting, San Jose, CA., Jan. 25-27, 2022. [link]
  24. H. Gill* and S. Lee, “Effect of 2D Ice Accretion on Trailing-Edge Noise,” 27th AIAA/CEAS Aeroacoustics Conference, Virtual Event, August 2-6, 2021. [link]
  25. J. Sagaga* and S. Lee, “Acoustic Predictions for the Side-by-Side Air Taxi Rotor in Hover,” 77th VFS International Annual Forum, Virtual Event, May 10-14, 2021. (Nominated for the best paper in the acoustic session) [link]
  26. S. Li* and S. Lee, “Acoustics Analysis of a Quiet Helicopter for Air Taxi Operations,” 77th VFS International Annual Forum, Virtual Event, May 10-14, 2021. (Selected as the best paper in the acoustics session) [link]
  27. S. Lee and I. Shlesinger*, “Coaxial Rotor Broadband Noise Prediction in Hover,” 76th VFS International Annual Forum, Virginia Beach, Virginia, October 6-8, 2020 [link][presentation]
  28. Z. Jia* and  S. Lee, “Aeroacoustic Analysis of a Side-by-Side Hybrid VTOL Aircraft,” 76th VFS International Annual Forum, Virginia Beach, Virginia, October 6-8, 2020 [link][presentation]
  29. C. Liu* and S. Lee, “Surrogate-Based Optimization for Airfoil Trailing-Edge Noise Reduction Using Morphed Trailing-Edge Shapes,” Inter-noise 2020, Seoul, Korea, August 23-26, 2020 [link][presentation]
  30. C. Liu* and S. Lee, “Parametric Airfoil Design for Trailing-Edge Noise Reduction,” 26th AIAA/CEAS Aeroacoustics Conference, Virtual Event, June 15-19, 2020 (Selected as one of the top 5 best student papers in the aeroacoustics conference) [link][presentation]
  31. S. Li* and S. Lee, “A Machine Learning-Based Fast Prediction of Rotorcraft Broadband Noise,” 26th AIAA/CEAS Aeroacoustics Conference, Virtual Event, June 15-19, 2020 [link][presentation]
  32. J. Shum* and S. Lee, “Computational Fluid Dynamics Best Practices for 2D Dynamic Stall Predictions,” AIAA Fluid Dynamics Conference, Virtual Event, June 15-19, 2020 [link][presentation]
  33. J. Sagaga* and S. Lee, “CFD Hover Predictions for the Side-by-Side Urban Air Taxi Concept Rotor,” AIAA Applied Aerodynamics Conference, Virtual Event, June 15-19, 2020 [link][presentation]
  34. Z. Jia* and  S. Lee, “Acoustic Analysis of Urban Air Mobility Quadrotor Aircraft,” Vertical Flight Society (VFS) Aeromechanics for Advanced Vertical Flight Technical Meeting, San Jose, CA., Jan. 20-23, 2020 [link] [presentation]
  35. S. Li* and  S. Lee, “UCD-QuietFly: A New Program to Predict Multi-Rotor eVTOL Broadband Noise,” Vertical Flight Society (VFS) Aeromechanics for Advanced Vertical Flight Technical Meeting, San Jose, CA., Jan. 20-23, 2020 [link] [presentation]
  36. K. Sharma, K.S. Brentner, Z. Jia* and  S. Lee, and P. Anusonti-Inthra, “Aeroacoustic Predictions of Free-Wake, Vortex Particle Method, and Computational Fluid Dynamics for a Coaxial Rotor System,” Vertical Flight Society (VFS) Aeromechanics for Advanced Vertical Flight Technical Meeting, San Jose, CA., Jan. 20-23, 2020 [link]
  37. Z. Jia* and  S. Lee, “Acoustic Analysis of a Quadrotor eVTOL Design via High-Fidelity Simulations,” 25th AIAA/CEAS Aeroacoustics Conference, Delft, Netherlands, May 20-24, 2019 [link] [presentation]
  38. Y. Shi* and  S. Lee, “Numerical Study of 3-D Finlets Using RANS CFD for Trailing Edge Noise Reduction,” 25th AIAA/CEAS Aeroacoustics Conference, Delft, Netherlands, May 20-24, 2019 [link] [presentation]
  39. S. Li* and  S. Lee, “Prediction of Rotorcraft Broadband Trailing-Edge Noise and Parameter Sensitivity Study,” 75th VFS International Annual Forum, Philadelphia, PA., May 13-19, 2019 [link] [presentation]
  40. S. Lee and M. Dassonville*, “Iterative Blade Element Momentum Theory for a Coaxial Rotor,” 75th VFS International Annual Forum, Philadelphia, PA., May 13-19, 2019 [link] [presentation]
  41. Z. Jia*, S. Lee, K. Sharma, and K.S. Brentner, “Effect of Pitch Attitude on the Performance and Acoustics of a Lift-Offset Coaxial Rotor Based on High-Fidelity CFD/CSD Simulations,” 75th VFS International Annual Forum, Philadelphia, PA., May 13-19, 2019 [link] [presentation]
  42. K. Sharma, K.S. Brentner, Z. Jia* and S. Lee, “Aeroacoustic Study of Coaxial Rotor under Varying Trim Conditions and Rotor Orientations using Free Wake Analysis,” 75th VFS International Annual Forum, Philadelphia, PA., May 13-19, 2019 [link]
  43. Z. Jia* and  S. Lee, “Acoustics of a Lift-Offset Coaxial Rotor in High-Speed Forward Flight Based on High-Fidelity CFD/CSD Loose Coupling Simulations,” 7th Asian/Australian Rotorcraft Forum, Jeju, Korea, Oct 30 – Nov 1, 2018 [link]
  44. Z. Jia*, S. Lee, and K.S. Brentner,  “Assessment of Turbulence Modeling and Wake-Grid Resolution for Lift-Offset Coaxial Rotor Simulations,” AIAA Paper 2018-4120, AIAA Applied Aerodynamics Conference, Atlanta, GA., June 25-29, 2018 [link]
  45. D.H. Nguyen* and S. Lee,  “Investigation on the Accuracy of the TNO Model Using RANS CFD and XFOIL Inputs for Airfoil Trailing Edge Noise Predictions,” AIAA Paper 2018-2811, 24th AIAA/CEAS Aeroacoustics Conference, Atlanta, GA., June 25-29, 2018 [link]
  46. Y. Shi* and S. Lee,  “Numerical Study of 2-D Finlets Using RANS CFD for Trailing Edge Noise Reduction,” AIAA Paper 2018-2812, 24th AIAA/CEAS Aeroacoustics Conference, Atlanta, GA., June 25-29, 2018 [link]
  47. S. Lee and J.G. Shum*,  “Validation of an Empirical Wall Pressure Spectrum Model for Airfoil Trailing Edge Noise Predictions,” AIAA Paper 2018-3791, 24th AIAA/CEAS Aeroacoustics Conference, Atlanta, GA., June 25-29, 2018 [link]
  48. Z. Jia*, S. Lee, K. Sharma, and K.S. Brentner,  “Aeroacoustic Analysis of a Lift-Offset Coaxial Rotor Using High-Fidelity CFD-CSD Loose Coupling Simulation,” 74th AHS International Annual Forum, Phoenix, AZ., May 14-17, 2018 (Nominated for the best paper in the acoustic session) [link] [presentation]
  49. S. Lee and A. Villaescusa*, “Comparison and Assessment of Recent Empirical Models for Turbulent Boundary Layer Wall Pressure Spectrum ,” AIAA Paper 2017-3688, 23nd AIAA/CEAS Aeroacoustics Conference, Denver, CO., June 5-9,  2017 [link]
  50. S. Lee, “Trailing Edge Noise Source Characteristics for Wind Turbine Airfoils,” AIAA Paper 2017-3168, 23nd AIAA/CEAS Aeroacouustics Conference, Denver, CO., June 5-9,  2017 [link]
  51. P.K. Dhawan* and S. Lee, “Validation and Numerical Parameter Study of a Semi-Empirical Trailing Edge Noise Model,” ICMAE M3039,  7th International Conference on Mechanical and Aerospace Engineering, London, UK, July 18-22, 2016. [link]
  52. S. Lee, “Source Characterization of Turbulent Boundary Layer Trailing Edge Noise Using an Improved TNO Model,” AIAA Paper 2016-2812, 22nd AIAA/CEAS Aeroacoustics Conference, Lyon, France, May 30-June 1,  2016 [link]
  53. S. Lee, D. Lee and S. Honhoff, “Prediction of Far-Field Wind Turbine Noise Propagation with Parabolic Equation,” AIAA Paper 2015-2840, 21st AIAA/CEAS Aeroacoustics Conference, Dallas, TX, Jun 22-26, 2015.
  54. S. Lee, “Inverse Design of Horizontal Axis Wind Turbine Blades Using a Vortex Line Method,” AIAA Paper 2012, 30th ASME Wind Energy Symposium, Nashville, TN, Jan 9-11, 2012.
  55. S. Lee, K.S. Brentner and P.J. Morris, “Assessment of Time-Domain Equivalent Source Method for Acoustic Scattering,” AIAA Paper 2010-3821, 16th AIAA/CEAS Aeroacoustics Conference, Stockholm, Sweden, June 7-9, 2010.
  56. S. Lee, K.S. Brentner and P.J. Morris, “Long-Range and Nonlinear Propagation of Helicopter High-Speed Impulsive Noise,” The American Helicopter Society 66th Annual Forum, Phoenix, Arizona, May 11-May 13, 2010.
  57. S. Lee, P.J. Morris and K.S. Brentner, “Nonlinear Acoustic Propagation Predictions with Applications to Aircraft and Helicopter Noise,” AIAA Paper 2010-1384, 48th AIAA Aerospace Sciences Meeting, Orlando, FL, Jan 4-7, 2010.
  58. S. Lee, K.S. Brentner and P.J. Morris, “Time-domain Approach for Acoustic Scattering of Rotorcraft Noise,” The American Helicopter Society 65th Annual Forum, Grapevine, Texas, May 27-May 29, 2009.
  59. S. Lee, K.S. Brentner and P.J. Morris, “Prediction of Acoustic Scattering in the Time Domain Using a Moving Equivalent Source Method,” AIAA Paper 2009-3177, 15th AIAA/CEAS Aeroacoustics Conference, Miami, FL, May 11-13, 2009.
  60. S. Lee, J.P. Erwin and K.S. Brentner, “Acoustic Scattering of Rotorcraft Noise,” The American Helicopter Society 64th Annual Forum, Montreal, QC, Canada, Apr 28-May 1, 2008.
  61. S.Y. Wie, S. Lee and D.J. Lee, “Numerical Investigation of Rotor Wake in Vertical and Forward Flight,” 4th International Conference on Vortex Flows and Models, Daejeon, Korea, Apr. 21- 23, 2008.
  62. S. Lee, K.S. Brentner and F. Farassat, ““Analytic Formulation and Numerical Implementation of an Acoustic Pressure Gradient Prediction,” AIAA Paper 2007-3710, 13th AIAA/CEAS Aeroacoustics Conference, Rome, Italy, May 21-23, 2007.
  63. S. Lee, K.S. Brentner, C. C. Hennes, B. T. Flynt, J. N. Theron and E. P.N. Duque,” Investigation of the Accuracy Requirements of Permeable Surfaces Used in Rotor Noise Prediction,” The American Helicopter Society 62nd Annual Forum, Phoenix, AZ, May 9-11, 2006.
  64. K.Y. Kim, S. Lee, D.J. Lee, S.H. Hong, and J.S. Choi, ” Noise Prediction of Hovering Tilt Rotor,” The Korean Society of Noise and Vibration Conference, Korea, May, 2005.
  65. D.J. Lee, S. Lee, W.J. Jeon, J.W.Lee and Y.N. Kim, ” Software Development for Fan Flow and Noise,” The Korean Society of Noise and Vibration Conference, Kyungju, Korea, May, 2004.
  66. S. Lee, B.S. Kim and D.J. Lee, “Analysis for aerodynamics of airplane wing and rotor blades by coupled vortex ring/doublet panel modeling of wake,” The Korean Society for Aeronautical & Space Sciences Conference, Kyungju, Korea, Nov, 2003.
  67. H.L. Choi, K.H. Chung, W.J. Jeon, B.S. Kim, S. Lee and D.J. Lee, “Noise Prediction for a Boxed Fan System,” Internoise2003, Cheju, Korea, Aug. 2003
  68. W.J. Jeon, S. Lee, C.K, Jung and D.J. Lee, “Software development for the analysis of flow/noise by fan,” The Korean Society of Mechanical Engineering Conference, Coex, Korea, 13-14 Nov. 2002.