Numerical investigations of the compressible turbulent flow past wavy-axis cylinder
Numerical investigations of the compressible turbulent flow past wavy-axis cylinder
复制标题
波轴圆柱体可压缩紊流的数值研究
DOI:
10.1088/1873-7005/ab2f84
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发表时间:
2019-07
影响因子:
1.5
通讯作者:
Sun Jian Hong
中科院分区:
文献类型:
--
作者:
Xu Chang Yue;Zhang Yan Tai;Hou Bin;Sun Jian Hong
The compressible turbulent flows past wavy-axis cylinder have been studied numerically using the large-eddy simulation technique. The free-stream Mach number and Reynolds number based on the diameter are 0.75 and 2× 10 5, respectively. To investigate the effects of angle of attack on force behaviors and wake characteristics, several angles of attack are adopted, ie, α= 0, 15, 30, 45, 60, 75 and 90. Results show that there are two different force behaviors, as well as wake characteristics around the critical angle of attack about 45. One is the effective drag reduction and suppression of fluctuating force with vortex shedding vanishing for α< 45. The other is obvious rises of drag and fluctuating force with the appearance of vortex shedding for α> 45. In particular, at α= 90, force behaviors and wake characteristics of a wavy-axis cylinder are identical to that of a circular cylinder. Furthermore, the mechanisms relevant to different force behaviors and wake characteristics have also been revealed. The first flow state is associated with wave-like separation along the spanwise direction and symmetric flow mode. The attenuated wave-like separation and asymmetric flow mode can give an interpretation for the second flow state.
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DOI:
10.1007/s11434-009-0325-x
发表时间:
2009-06
期刊:
科学通报(英文版)
影响因子:
--
作者:
Chen LiWei;Lu XiYun;Xu ChangYue
通讯作者:
Xu ChangYue
DOI:
10.1063/1.869749
发表时间:
1998-10
期刊:
Scopus
影响因子:
--
作者:
P. DesJardin;S. Frankel
通讯作者:
P. DesJardin;S. Frankel
影响因子:
4.6
作者:
Y. F. Dong;Zhonglei Wei;C. Xu
通讯作者:
Y. F. Dong;Zhonglei Wei;C. Xu
影响因子:
3.7
作者:
Rupad Darekar;S. Sherwin
通讯作者:
Rupad Darekar;S. Sherwin
影响因子:
4.6
作者:
P. Moin;K. Squires;W. Cabot;Sangsan Lee
通讯作者:
P. Moin;K. Squires;W. Cabot;Sangsan Lee