Vortex connection and turbulence cascade
| Dates: | 18 April 2023 |
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| Times: | 15:00 - 16:00 |
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| What is it: | Lecture |
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| Organiser: | Faculty of Science and Engineering |
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| Who is it for: | University staff, External researchers, Current University students, General public |
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| Speaker: | Dr. Jie Yao |
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Abstract of the lecture:
This is an online only lecture.
Turbulence, one of the most challenging problems left over from classical physics, has a wide range of applications in the field of engineering technology. The study of vortex dynamics, including the generation, evolution, and interaction, not only helps to understand the fundamental laws of turbulence and establish an easily understandable physical model, but also provides theories for solving various technical problems. Reconnection is the process whereby two approaching vortices cut and connect to each other. For viscous fluid flows, reconnection is believed to play a significant role in various important phenomena, such as turbulence cascade, fine-scale mixing, and aerodynamic noise generation. In this talk, the underlying mechanism involved in vortex reconnection and its apparent role in turbulence cascade, helicity dynamics, and finite-time singularity will be delineated. The study of wall turbulence is not only a fundamental subject for flow physics, but also serves a vital role in supporting the development of crucial equipment, such as aircraft, hypersonic vehicles, missiles, and engines.
About the speaker:
Jie Yao obtained the B.S. in Nanjing University of Science and Technology in 2011 and an M.S. in University of Houston in 2013 and Ph.D. from Texas Tech University in 2019. After that, he becomes a Postdoctoral Researcher at Texas Tech University. Jie Yao’s expertise is in vortex dynamics, turbulence, flow control, and high-performance computing. He has published 20 peer-reviewed articles in top journals of fluid mechanics, including the Annual Review of Fluid Mechanics, Journal of Fluid Mechanics, Physical Review Fluids, and Physics of Fluids. https://scholar.google.com/citations?user=e0UkyXoAAAAJ&hl=en
Speaker
Dr. Jie Yao
Role: Assistant Professor
Organisation: Texas Tech University
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