Academic Staff

BE(Hons), PhD

Area of Specialization

Thermochemical nonequilibrium; Hypersonic impulse facilities; Optical diagnostics; Experimental hypersonics.

********MULTIPLE PHD POSITIONS ARE AVAILABLE*****************

I am currently looking for candidates to work on various topics related to hypersonic flows. Several scholarships are available. Please contact me for more details.

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Short Description

Dr. Sangdi Gu is a Research Assistant Professor in the Department of Aeronautical and Aviation Engineering at The Hong Kong Polytechnic University. He holds a Ph.D. in Aerospace Engineering from The University of Queensland and has extensive experience in hypersonic research, including postdoctoral work at RWTH Aachen University in Germany and research visits to institutions such as NASA Ames Research Center. His research encompasses thermochemical nonequilibrium phenomena, radiation gasdynamics, impulse facilities, and optical diagnostics. Dr. Gu has published numerous articles in leading journals, and teaches advanced postgraduate courses as well as fundamental undergraduate courses in aerodynamics and propulsion, actively contributing to the academic growth of his students. He currently serves as the chief supervisor for two PhD candidates and one MPhil student, while also leading significant research projects funded by various grants.

Full CV

Selected Publications

Gu, S., & Olivier, H. (2020). Capabilities and limitations of existing hypersonic facilities. Progress in Aerospace Sciences, 113, 100607. https://doi.org/10.1016/j.paerosci.2020.100607

Gu, S., Morgan, R. G., McIntyre, T. J., & Brandis, A. M. (2022). An Experimental Study of CO2 Thermochemical Nonequilibrium. AIAA Journal, 60(3), 1283-1292. https://doi.org/10.2514/1.J061037

Gu, S., Hao, J., & Wen, C. Y. (2022). On the Vibrational State-Specific Modeling of Radiating Normal Shocks in Air. AIAA Journal, 60(6), 3760-3774. https://doi.org/10.2514/1.J061438

Gu, S., Hao, J., & Wen, C. Y. (2022). State-Specific Study of Air in the Expansion Tunnel Nozzle and Test Section. AIAA Journal, 60(7). https://doi.org/10.2514/1.J061479

Gu, S., Olivier, H., Wen, C. Y., Hao, J., & Wang, Q. (2022). Characterization of Reflected Shock Tunnel Air Conditions using a Simple Method. Physics of Fluids, 34(5). https://doi.org/10.1063/5.0089120

Gu, S., Hao, J., & Wen, C. Y. (2022). Air thermochemistry in the converging section of de Laval nozzles on hypersonic wind tunnels. AIP Advances, 12(8).https://doi.org/10.1063/5.0106554 (Featured)

Gu, S., Hao, J., Wang, Q., & Wen, C. Y. (2023). Influence of Thermochemical Nonequilibrium on Expansion Tube Air Test Conditions: A Numerical Study. Physics of Fluids, 35(3). https://doi.org/10.1063/5.0141281 (in special issue on Hypersonic Flow)

Gu, S., Hao, J., & Wen, C. Y. (2023). Can vibrational pumping occur via O2–N2 collisions in nonequilibrium vibrationally excited air?. Physics of Fluids, 35(6). https://doi.org/10.1063/5.0151461

Gu, S., Hao, J., Wen, C.Y., Hong, Q., & Wang, Q. (2024). How Much Does Thermal Nonequilibrium Influence the Overall Atomic Recombination During De-Excitation?. Chemical Physics, 112220. https://doi.org/10.1016/j.chemphys.2024.112220

Gu S, Wen C-Y, Hao J, Wang W, Wang Q. The influence of hypersonic free-stream conicity on the flow over a sphere. Journal of Fluid Mechanics. 2024;989:A10. doi:10.1017/jfm.2024.489

Peer Review Services

Physics of Fluids

International Journal of Thermal Sciences

AIAA Journal

Journal of Spacecraft and Rockets

Journal of Thermophysics and Heat Transfer

Shock Waves

Teaching

AAE6104 - Advanced High Speed Propulsion

AAE3011 - Aircraft Performance and Flight

AAE3001 - Fundamentals of Aerodynamics

AAE4002 - Capstone Project