Effect of fast rotation on pressure fluctuations and Taylor–Görtler-like vortices in channel flows
文献类型：会议论文
| 作者 | Yang ZX(杨子轩); Deng BQ; Wang B-C |
| 出版日期 | 2019 |
| 会议日期 | Jul 30 2019 → Aug 2 2019 |
| 会议地点 | Southampton, United Kingdom |
| 英文摘要 | In this paper, the pressure field is decomposed into rotation-induced and convection-induced components to analyze the effects of streamwise system rotation on the pressure fluctuations and the transport of Reynolds stresses. We show analytically that the system rotation acts as a “linear amplifier”, which converts high-wavenumber low-amplitude streamwise vorticity fluctuations into low-wavenumber high-amplitude pressure fluctuations, and facilitates the growth of streamwise-elongated Taylor–Görtler-like (TGL) vortices. A new set of transport equations in the spectral space is derived to study the budget balance of velocity-spectrum tensor at different wavelengths. The mechanisms underlying the generation of TGL vortices are explained through the analyses of the budget balance of Reynolds stresses and energy spectra. © 2019 International Symposium on Turbulence and Shear Flow Phenomena, TSFP. All rights reserved. |
| 会议录 | 11th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2019
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| 语种 | 英语 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/85112]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Department of Mechanical Engineering, University of Manitoba, Winnipeg, R3T 5V6, Canada 2.St. Anthony Falls Laboratory, University of Minnesota, Minneapolis, 55414, United States 3.State Key Laboratory of Nonlinear Mechanics Institute of Mechanics, Chinese Academy of Science, Beijing, 100190, China |
| 推荐引用方式 GB/T 7714 | Yang ZX,Deng BQ,Wang B-C. Effect of fast rotation on pressure fluctuations and Taylor–Görtler-like vortices in channel flows[C]. 见:. Southampton, United Kingdom. Jul 30 2019 → Aug 2 2019. |
入库方式： OAI收割
来源：力学研究所
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