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Study Of High-Speed Aerodynamics: High-Fidelity Simulation, Turbulence Modeling and Flow Control

Dates:21 March 2023
Times:15:00 - 16:00
What is it:Seminar
Organiser:Department of Mechanical, Aerospace and Civil Engineering
Who is it for:University staff, External researchers, Adults, Current University students, General public
Speaker:Dr. Jian Fang
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  • In category "Seminar"
  • In group "(FSE) Modelling and Simulation Centre Seminar Series"
  • By Department of Mechanical, Aerospace and Civil Engineering

Abstract of the lecture:

The development of hypersonic vehicles is currently a prominent area of interest in the aviation field. However, two critical problems are hindering its progress: insufficient knowledge and understanding of some key high-speed flow phenomena, such as shock wave/turbulent boundary layer interactions (SWTBLIs), and uncertainty in turbulence models for high-speed flows. This talk aims to present recent progress in analysing high-speed flow through the use of high- fidelity simulations. We developed a set of high-order numerical schemes and the ASTR code, by using which we conducted a series of direct-numerical/large-eddy simulations of SWTBLIs. The analysis of the DNS/LES data has led to the discovery of new flow structures, and flow mechanisms were proposed to explain them. Furthermore, with a deeper understanding of the flow dynamics, we improved turbulence models for high-speed flows. These models showed better performance in SWTBLIs and have been adopted in wider applications. We also studied the control of SWTBLIs using convergence-divergence riblets through high-fidelity simulations and confirmed their positive impact on flow separation.

About the speaker:

Dr. Jian Fang is now a senior research scientist in Scientific Computing Department of STFC Daresbury Laboratory. He got his PhD from Beihang University, China, and spent one year in UWE as a Leverhulme scholar. He joined STFC Daresbury Laboratory in 2014, and his research work is focusing on high- performance computing, CFD software development, DNS/LES, SWBLI, Turbulence modelling and Flow Control. His is a member of RAeS, UKTC and UKCTRF, and the co-leader of the high-speed CFD SIG of UK Fluids Network.

Speaker

Dr. Jian Fang

Role: Senior Research Scientist

Organisation: SFTC Daresbury Laboratory

  • https://www.scd.stfc.ac.uk/Pages/Jian-Fang.aspx

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Engineering Building A - Room 1A.023

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Dr. Alistair Revell

alistair.revell@manchester.ac.uk

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