Studies of flight-velocity effects on near-field and intermittent properties of a subsonic jet
Studies of flight-velocity effects on near-field and intermittent properties of a subsonic jet
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飞行速度对亚音速喷气机近场和间歇特性的影响研究
DOI:
10.1016/j.compfluid.2019.104351
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发表时间:
2020-01
影响因子:
2.8
通讯作者:
Fu Song
中科院分区:
文献类型:
--
作者:
Zhu Wenqing;Xiao Zhixiang;Fu Song
The flight velocity effect on a cold jet flow is numerically predicted by the improved delayed detached eddy simulation (IDDES) with a modification to the grid length scale, mainly focusing on the near-field flows and intermittency properties in the jet centerline region. First, the modification in IDDES is validated using three meshes and available measurements. This method can reduce the modeled eddy viscosity effectively and improve the performance of original IDDES. Then, the flight velocity effects on the mean flow, turbulence, and intermittency are studied. From the results, the fluctuation intermittency near the end of potential core is caused by the intrusion of turbulent shear-layer structures into the jet core. When the flight velocity increases, the intermittency factor in the jet centerline region is reduced, and its peak moves downstream. The skewness and kurtosis factors perform in a similar manner.
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DOI:
10.1016/j.ijheatfluidflow.2017.10.008
发表时间:
2017-12
影响因子:
2.6
作者:
R. Camussi;M. Mancinelli;A. Marco
通讯作者:
R. Camussi;M. Mancinelli;A. Marco
影响因子:
1
作者:
S. Unnikrishnan;D. Gaitonde;L. Agostini
通讯作者:
S. Unnikrishnan;D. Gaitonde;L. Agostini
影响因子:
9
作者:
Jian Liu;Wenqing Zhu;Zhixiang Xiao;Haisheng Sun;Yong Huang;Zhitao Liu
通讯作者:
Zhitao Liu
DOI:
10.1016/j.ijheatfluidflow.2012.01.006
发表时间:
2012-06
期刊:
Proceeding of Seventh International Symposium on Turbulence and Shear Flow Phenomena
影响因子:
--
作者:
R. Sandberg;N. Sandham;V. Suponitsky
通讯作者:
R. Sandberg;N. Sandham;V. Suponitsky
影响因子:
2.5
作者:
Liu Jian;Xiao Zhixiang
通讯作者:
Xiao Zhixiang