Publications

Xixuan Huang, Sayop Kim, Je Ir Ryu, (2026). "Understanding detonation propagation modes through energy distribution in rotating detonation engines," Proceedings of the Combustion Institute, 42, 106576, doi.org/10.1016/j.proci.2026.106576 

Sayop Kim, Je Ir Ryu, Sang-Guk Kang, Austen H. Motily, Prapassorn Numkiatsakul, Richard Alonso, Tonghun Lee, Waltraud M. Kriven, Kenneth S. Kim, Chol-Bum M. Kweon (2025). "Numerical Investigations of Combustion Dynamics and Thermo-Mechanical Stress in the Ignition Assistance System for Small Aircraft Engines," Combustion Science and Technology, 197 (5), 944-975, doi.org/10.1080/00102202.2023.2278075 

Sayop Kim, Tonghun Lee, Je Ir Ryu, Kenneth S. Kim, Chol-Bum M. Kweon (2024). "Physiochemical View of Fuel Jet Impingement and Ignition Upon Contact with a Cylindrical Hot Surface," Combustion and Flame, 270, 113784, doi.org/10.1016/j.combustflame.2024.113784 

Sayop Kim, Je Ir Ryu, "On the Use of Flamelet Model Approach in Analyzing the Mixing-Controlled Spray Flame Dynamics (2023)." Applications in Energy and Combustion Science, 17, 100234, doi.org/10.1016/j.jaecs.2023.100234 

Sayop Kim, Lorenzo Nocivelli, Anqi Zhang, Alexander K. Voice, Yuanjiang Pei (2023). "Realistic Fuel Spray Modeling for Gasoline Direct Injection Engine Applications," International Journal of Engine Research, 25 (3), doi.org/10.1177/14680874231210929 

Sayop Kim, Roberto Torelli, Surya Kaundinya Oruganti, Je Ir Ryu, Tonghun Lee, Kenneth S. Kim, Chol-Bum M. Kweon (2023). "Modeling of the Spray-Induced Wall Stress Acting on the Ignition Assistance Device," Physics of Fluids, 35 (10), 103325, doi.org/10.1063/5.0173360 

Sayop Kim, Riccardo Scarcelli, Yunchao Wu, Johannes Rohwer, Ashish Shah, Toby Rockstroh, Tianfeng Lu (2021). "Simulations of Multi-Mode Combustion Regimes Realizable in a Gasoline Direct Injection Engine," Journal of Energy Resources Technology, (11), 112307-1, doi.org/10.1115/1.4050589 

Dorrin Jarrahbashi, Sayop Kim, Caroline L Genzale (2017). "Simulation of Combustion Recession After End-Of-Injection at Diesel Engine Conditions," Journal of Engineering for Gas Turbines and Power, 139 (10), 102804, doi.org/10.1115/1.4036294 

Dorrin Jarrahbashi, Sayop Kim, Caroline L Genzale (2017). "Computational Analysis of End-Of-Injection Transients and Combustion Recession," International Journal of Engine Research, 18 (10), 1088-1100, doi.org/10.1177/14680874177012 

Sayop Kim, Jin Woo Hwang, Chang Sik Lee (2010). "Experiments and Modeling on Droplet Motion and Atomization of Diesel and Bio-Diesel Fuels in a Cross-Flowed Air Stream, 31 (4), 667-679, doi.org/10.1016/j.ijheatfluidflow.2010.02.001 

Sayop Kim, Doo Jin Lee, Chang Sik Lee (2009), "Modeling of Binary Droplet Collisions for Application to Inter-Impingement Sprays," International Journal of Multiphase Flow, 35 (6), 533-549, doi.org/10.1016/j.ijmultiphaseflow.2009.02.010 

Sung Wook Park, Sayop Kim, Chang Sik Lee (2006). "Effect of Mixing Ratio of Biodiesel on Breakup Mechanisms of Monodispersed Droplets," Energy & Fuels, 20 (4), 1709-1715, doi.org/10.1021/ef050372z 

Sung Wook Park, Sayop Kim, Chang Sik Lee (2005). "Breakup and Atomization Characteristics of Mono-Dispersed Diesel Droplets in a Cross-Flow Air Stream," International Journal of Multiphase Flow, 32 (7), 807-822, doi.org/10.1016/j.ijmultiphaseflow.2006.02.019 

Seungwon Song, Sayop Kim, Je Ir Ryu, Hanseul Shim, Hyung Sub Sim (2026). "Large-Eddy Simulation Study of Effects of Ambient Oxygen Concentration on High-Pressure Liquid-Fuel Spray Flames," Journal of ILASS-Korea, 31 (1), https://doi.org/10.15435/JILASSKR.2026.31.1.34

Seungwon Song, Sayop Kim, Je Ir Ryu, Hyung Sub Sim (2025). "Study on Ignition and Combustion Characteristics of High-Pressure Liquid Fuel Using Experiments and Large-Eddy Simulations," Journal of ILASS-Korea, 30 (3), https://doi.org/10.15435/JILASSKR.2025.30.3.138

Sayop Kim, Taehoon Han, Daesik Kim (2024). "On the Use of the Primary Breakup Model with Integration of Internal-nozzle Turbulence Impact," Journal of ILASS-Korea, 29 (3), 105-111, doi.org/10.15435/JILASSKR.2024.29.3.105 

Sayop Kim, Xixuan Huang, and Je Ir Ryu (2026). “,Numerical Investigations on Unsteady Detonation Flame Dynamics in a Rotating Detonation Engine," AIAA SCITECH 2026 Forum, January 2026, doi.org/10.2514/6.2026-1968 

Seungwon Song, Sayop Kim, Je Ir Ryu, Hanseul Shim, and Hyung Sub Sim (2025). “Study on Ignition and Combustion Characteristics of High-Pressure Liquid Fuel Sprays through Large-Eddy Simulation,” ILASS-Korea: 30 Years of Innovation in Atomization and Spray Systems, Jeju, Korea, November 5-8, 2025

Seungwon Song, Sayop Kim, Je Ir Ryu, and Hyung Sub Sim (2025). “Large-Eddy Simulation and High-Speed Optical Study of High-Pressure Liquid Hydrocarbon Spray Combustion,” The 24th Annual Conference on Liquid Atomization and Spray Systems-Asia (ILASS-Asia 2025), paper ID# 0065, Tainan, Taiwan, October 26-30, 2025.

Seungwon Song, Sayop Kim, Fabien Tagliante, Je Ir Ryu, and Hyung Sub Sim (2025). "Combined Experimental and Numerical Study of the Ignition and Combustion Processes in High-Pressure Spray A-3 Flames," The 18th Asian Congress of Fluid Mechanics (ACFM), paper ID# We42-KL2, Seoul, Korea 2025.

Seungwon Song, Sayop Kim, Je Ir Ryu, Abdullah Mohammad A Alqassier, and Hyung Sub Sim (2025). “Comparison of LES and Experiments on Ignition and Combustion Characteristics of High-Pressure Liquid Fuel Sprays,” The Korean Society of Propulsion Engineers The 6th Spring Conference, pp. 127-129, May 2025.

Sayop Kim, Haris Mehraj, Tonghun Lee, Kenneth S. Kim, Chol-Bum M. Kweon, Je Ir Ryu (2024). "CFD-Aided Structural Rigidity Analysis for the Ignition Assistance Device Applicable to Small Aircraft Engines," AIAA Aviation Forum and ASCEND 2024, doi.org/10.2514/6.2024-4411 

Sayop Kim, Haris Mehraj, Taehoon Han, Tonghun Lee, Kenneth S. Kim, Chol-Bum M. Kweon, Je Ir Ryu (2024). "Modeling Approach and Simulations of Mechanical Wall Stress Caused by Thermal-Spray Impacting Hot Surfaces," 16th Triennial International Conference on Liquid Atomization and Spray Systems, Paper# 6-9, hal.science/hal-04668954/document 

Sayop Kim, Tonghun Lee, Chol-Bum M. Kim, Kenneth S., Kweon, Je Ir Ryu (2024). "Large-Eddy Simulations of Fuel Jet Combustion Assisted by the Cylindrical Hot Surface," 19th International Conference on Numerical Combustion, Track04-8, www.combustionsociety.jp/nc24/program/program/Abstract.html#ICNC2024-1054 

Sayop Kim, Je Ir Ryu (2023). "Modeling of Non-Premixed Turbulent Flame Dynamics Using an Open-Source CFD Code," The 29th International Colloquium on the Dynamics of Explosions and Reactive Systems, Paper ID 84, www.icders.org/ICDERS2023/abstracts/ICDERS2023-084.pdf 

Sayop Kim, Roberto Torelli, Surya K. Oruganti, Je Ir Ryu, Tonghun Lee, S. Kim, Kenneth, Chol-Bum M. Kweon (2023). "Modeling of Spray-Induced Wall Stress on a Hot Surface of Ignition Assistance Device," AIAA AVIATION 2023 Forum, AIAA 2023-3764, doi.org/10.2514/6.2023-3764 

Sayop Kim, Je Ir Ryu, Austen H. Motily, Tonghun Lee, S. Kim, Kenneth, Chol-Bum M. Kweon (2023). "Parametric Analysis on Ignition Assistance by a Shielded Hot Surface under Aircraft Compression Ignition Engine Conditions," 14th Asia-Pacific Conference on Combustion, Kaohsiung, Taiwan, hal.science/hal-04677266v1/file/manuscript_final_submitted.pdf 

Sayop Kim, Je Ir Ryu, Austen H. Motily, Prapassorn Numkiatsakul, Richard Alonso, Tonghun Lee, Waltraud Kriven, Kenneth Kim, Chol Bum Kweon (2023). "Effect of Heating Device Voltage on Fuel Spray Ignition and Flame Characteristics under Aviation Propulsion System Conditions," AIAA SciTech 2023 Forum, doi.org/10.2514/6.2023-1652 

Sayop Kim, Riccardo Scarcelli, Johannes Rohwer, Ashish Shah, and Toby Rockstroh (2020), “Simulations of Multi-Mode Combustion Regimes Realizable in a Gasoline Direct Injection Engine,” Proceedings of the ASME 2020 ICEF2020-2940, Virtual Conference

Sayop Kim, Joohan Kim, Ashish Shah, Riccardo Scarcelli, Toby Rockstroh (2020). "Numerical analysis of fuel impacts on advanced compression ignition strategies for multi-mode internal combustion engines," SAE Technical Paper, 2020-01-1124, doi.org/10.4271/2020-01-1124 

Sayop Kim, Joohan Kim, Ashish Shah, Pinaki Pal, Riccardo Scarcelli, Toby Rockstroh, Sibendu Som, Yunchao Wu, Tianfeng Lu (2019). "Numerical study of advanced compression ignition and combustion in a gasoline direct injection engine," Internal Combustion Engine Division Fall Technical Conference, ICEF2019-7281, doi.org/10.1115/ICEF2019-7281 

Sayop Kim, Gabrielle Martinez, Boni Yraguen, Gina Magnotti, Katarzyna Matusik, Brandon Sforzo, Alan Kastengren, Christopher Powell, Tommaso Lucchini, Gianluca D'Errico, Benjamin Knox, Caroline Genzale (2018). "Validation of a New Turbulence-Induced Lagrangian Primary Breakup Model for Diesel Spray Atomization" 14th International Conference on Liquid Atomization and Sprays, Paper ID-262

Sayop Kim, Dorrin Jarrahbashi, Caroline Genzale (2017). "Investigation on the use of unsteady flamelet modeling for transient diesel spray combustion processes" ILASS-Americas 29th Annual Conference on Liquid Atomization and Spray Systems

Sayop Kim, Dorrin Jarrahbashi, Caroline Genzale (2017). "The role of turbulent-chemistry interaction in simulating end-of-injection combustion transients in diesel sprays" SAE Technical Paper, 2017-01-0838, doi.org/10.4271/2017-01-0838 

Dorrin Jarrahbashi, Sayop Kim, and Caroline Genzale (2016). “Simulation of Combustion Recession after End-of-Injection at Diesel Engine Conditions”, ASME-ICEF, Greenville, NC, October 2016

Christer Fureby, Niklas Zettervall, Sayop Kim, Suresh Menon (2015). "Large Eddy Simulation of a Simplified Lean Premixed Gas Turbine Combustor," International Symposium on Turbulence and Shear Flow Phenomena (TSFP-9), Melbourne, Australia, www.tsfp-conference.org/proceedings/2015/p1/P-33.pdf 

Sayop Kim, and Suresh Menon (2014). “Large-Eddy Simulation of a High-Pressure, Single-Element Lean Direct-Injected Gas-Turbine Combustor”, 52nd Aerospace Sciences Meeting, AIAA

Yunjung Oh, Donggon Lee, Kyusoo Jeong, Sayop Kim, Daesik Kim, Chang Sik Lee, and Sungwook Park,(2011). “Two-Stage Combustion Strategy for Reducing NOx Emissions in a Compression Ignition Engine”, SAE 2011-32-0659

Yun Jung Oh, Sayop Kim, Bong Woo Ryu, Munsoo Chon, Chang Sik Lee, and Sung Wook Park, (2010). “Reduction of grid-size dependency in DME spray simulation by using the EMC (Enhanced Momentum Coupling) model, Proceedings of the 14th Annual Conference on Liquid Atomization and Spray Systems-Asia, pp. 60-66

Sayop Kim, Sung Yong Ha, Dae Sik Kim, Sung Wook Park, and Chang Sik Lee (2009). “Three-dimensional simulation for in-cylinder spray development and diesel combustion by using the grid sizeindependent spray models”, The 13th Annual Conference on Liquid Atomization and Spray Systems-Asia, Wuxin, P. R. China, October 15-17

Sayop Kim, Sung Wook Park, and Chang Sik Lee (2009). “Improved Eulerian-Lagrangian spray simulation by using an enhanced momentum coupling model”,  Proceedings of the ASME 2009 Internal Combustion Engine Division Fall Technical Conference, Lucerne, Switzerland, September 20-24

Sayop Kim, and Chang Sik Lee (2009). “Improvement of the grid dependency of the momentum coupling and the droplet collision modeling in the Arbitrary Lagrangian-Eulerian method for spray simulations”, Paper number: 064, 11th International Conference on Liquid Atomization and Spray Systems, Vail, Colorado, USA, July 26-30, 2009.

Sayop Kim, Keun Hee Lee, and Chang Sik Lee (2008).  “Experimental investigation on the binary droplet collision phenomena”, The 12th Annual Conference on Liquid Atomization and Spray Systems-Asia, Yokohama, Japan, December 17-18, 2008.

Sayop Kim, Mun Soo Chon, and Chang Sik Lee (2007). “Simulation of diesel injection by using hybrid breakup models”, The 11th Annual Conference on Liquid Atomization and Spray Systems-Asia, Taipei, Taiwan, November 8-9, 2007.

Sayop Kim, Sung Wook Park, and Chang Sik Lee (2006). “A study on the numerical modeling of the droplet breakup in an air cross-flow”, Paper ID: ICLASS06-127, 10th International Conference on Liquid Atomization and Spray Systems, Kyoto, Japan, August 27-September 1, 2006.

Sayop Kim, Sung Wook Park, Kian Sung, Haeng Mook Cho, and Chang Sik Lee (2005). “Effect of mixing ratio of biodiesel on breakup characteristics of a single droplet”, Proceedings of the 10th Annual Conference on Liquid Atomization and Spray Systems-Asia, pp. 171-177, Seoul, Korea, October 13-14, 2005.