Academic Staff

Prof. Sangdi GU

Assistant Professor

QR833
3400 8065
sangdi.gu@polyu.edu.hk
"I am currently looking for several PhD candidates to work on various topics related to hypersonic flows."

Biography

BE(Hons), PhD

Area of Specialization

Hypersonic flow theory; 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

Prof. Sangdi Gu is an Assistant Professor in the Department of Aeronautical and Aviation Engineering at The Hong Kong Polytechnic University. He holds a PhD 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. Prof. 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 four PhD candidates and two MPhil students, while also leading significant research projects funded by various grants.

Full CV

Five Representative Publications

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

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. (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. (2025). Tangential-velocity gradient at stagnation-point boundary-layer edge for hypersonic spheres. AIAA Journal, in press.

Peer Review Services

Journal of Fluid Mechanics; Physics of Fluids; International Journal of Thermal Sciences; AIAA Journal; Journal of Spacecraft and Rockets; Journal of Thermophysics and Heat Transfer; Shock Waves.

Teaching

AAE3001 - Fundamentals of Aerodynamics; AAE3011 - Aircraft Performance and Flight; AAE4002 - Capstone Project; AAE5207 - Compressible Aerodynamics; AAE5210 - Space Vehicle Propulsion Systems; AAE6104 - Advanced High Speed Propulsion.