论文摘要
Direct numerical simulations of temporally evolving supersonic turbulent channel flows of thermally perfect gas are conducted at Mach number 3.0 and Reynolds number 4800 for various values of the dimensional wall temperature to study the influence of the latter on the velocity-temperature correlations. The results show that in a fully developed turbulent channel flow, as the dimensional wall temperature increases, there is little change in the mean velocity, but the mean temperature decreases. The mean temperature is found to be a quadratic function of the mean velocity, the curvature of which increases with increasing dimensional wall temperature. The concept of "recovery enthalpy" provides a connection between the mean velocity and the mean temperature, and is independent of dimensional wall temperature. The right tails of probability density function of the streamwise velocity fluctuation grows with increasing dimensional wall temperature. The dimensional wall temperature does not have a significant influence on the Reynolds analogy factor or strong Reynolds analogy（SRA）. The modifications of SRA by Huang et al. and Zhang et al. provide reasonably good results, which are better than those of the modifications by Cebeci and Smith and by Rubesin.
论文目录
文章来源
类型: 期刊论文
作者: XiaoPing Chen,XinLiang Li,ZuChao Zhu
来源: Science China(Physics,Mechanics & Astronomy) 2019年06期
年度: 2019
分类: 基础科学
专业: 力学
单位: Key Laboratory of Fluid Transmission Technology of Zhejiang Province, Zhejiang Sci-Tech University,Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences,School of Engineering Science, University of Chinese Academy of Sciences
基金: supported by the National Natural Science Foundation of China(Grant Nos.11502236,51536008,and 91852203),the National Key Research and Development Program of China(Grant No.2016YFA0401200),Science Challenge Project(Grant No.TZ2016001),the Natural Science Foundation of Zhejiang Province(Grant No.LQ16E090005)
分类号: O354.3
页码: 64-74
总页数: 11
文件大小: 1383K
下载量: 12
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