Numerical investigation of plane Couette flow with weak spanwise rotation

Huang, YuHan1; Xia, ZhenHua2,4; Wan, MinPing3; Shi, YiPeng1; Chen, ShiYi1,2,3

2019-04

10.1007/s11433-018-9310-4

Science China-Physics Mechanics & Astronomy   影响因子和分区

1674-7348

1869-1927

Direct numerical simulation of rotating plane Couette flow (RPCF) at Re-w = 1300 and Ro = 0.02 was performed with different mesh resolutions and different sizes of computation domain. Our results showed that a grid resolution in wall units with x(+) = 8.51, z(+) = 4.26, y(+)|min = 0.0873 and y(+)|(max) = 3.89 is fine enough to simulate the problem at the present parameters. The streamwise length L-x and spanwise length L-z of the computational box have different impacts on the flow statistics, where the statistics were converged if L-x is longer than 8h, while no converged results were obtained for different L-z. More importantly, our results with very long simulation time showed that a state transition would happen if L-x 8h, from a state with four pairs of roll cells to a state with three pairs of roll cells with L-z = 6h. Each state could survive for more than 1500h/U-w, and the flow statistics were different.

plane Couette flow spanwise rotation state transition

SCI ; EI

英语

其他

National Natural Science Foundation of China[11822208] ; National Natural Science Foundation of China[11772297] ; National Natural Science Foundation of China[11672123] ; National Natural Science Foundation of China[91752201]

Physics

Physics, Multidisciplinary

WOS:000453933300001

SCIENCE PRESS

20185106282332

Physics

Extraterrestrial Physics and Stellar Phenomena:657.2

Web of Science

1.Peking Univ, Coll Engn, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China
2.Zhejiang Univ, Dept Engn Mech, Hangzhou 310027, Zhejiang, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China
4.Zhejiang Univ, Key Lab Soft Machines & Smart Devices Zhejiang Pr, Hangzhou 310027, Zhejiang, Peoples R China

Huang, YuHan,Xia, ZhenHua,Wan, MinPing,et al. Numerical investigation of plane Couette flow with weak spanwise rotation[J]. Science China-Physics Mechanics & Astronomy,2019,62(4).

Huang, YuHan,Xia, ZhenHua,Wan, MinPing,Shi, YiPeng,&Chen, ShiYi.(2019).Numerical investigation of plane Couette flow with weak spanwise rotation.Science China-Physics Mechanics & Astronomy,62(4).

Huang, YuHan,et al."Numerical investigation of plane Couette flow with weak spanwise rotation".Science China-Physics Mechanics & Astronomy 62.4(2019).