Turbulent kinetic energy production and flow structures in compressible homogeneous shear flow
Turbulent kinetic energy production and flow structures in compressible homogeneous shear flow
复制标题
可压缩均匀剪切流中的湍流动能产生和流动结构
DOI:
10.1063/1.4961964
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发表时间:
2016-09
影响因子:
4.6
通讯作者:
Xiao Zuoli
中科院分区:
文献类型:
--
作者:
Ma Zongqiang;Xiao Zuoli
The production of turbulent kinetic energy (TKE) and flow structures in compressible homogeneous turbulent shear flow (HTSF) are investigated by using direct numerical simulation. A theoretical analysis suggests that the vertical turbulent transport process should be responsible for the production of TKE in HTSF. It is manifested based on a conditional average method that the pure TKE production becomes increasingly larger in strain regions than in vortex regions of the flow. The velocity-derivative correlation in the shear plane is employed to identify the streaky structures in HTSF, which also tend to occur predominantly in strain regions of turbulence. Localized analyses of conditional averages reveal that the streaky structures in compressible HTSF are closely related to the negative productions of TKE. A comparative study implies that flow compressibility has a considerable effect on the spatial distributions and patterns of the strain- and vortex-dominated fields, which in turn cause the discrepanci...
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影响因子:
3.7
作者:
CORINO, ER;BRODKEY, RS
通讯作者:
BRODKEY, RS
DOI:
--
发表时间:
2015
期刊:
--
影响因子:
--
作者:
J. Jiménez
通讯作者:
J. Jiménez
影响因子:
3.7
作者:
A. Simone;G. Coleman;C. Cambon
通讯作者:
A. Simone;G. Coleman;C. Cambon
影响因子:
27.7
作者:
A. Perry;M. S. Chong
通讯作者:
A. Perry;M. S. Chong
影响因子:
8.6
作者:
Alain Pumir;B. Shraiman
通讯作者:
Alain Pumir;B. Shraiman