Correlation between density and temperature fluctuations of hypersonic turbulent boundary layers at Ma(infinity)=8 | |
Li X(李欣)1,2![]() ![]() ![]() | |
发表期刊 | AIP ADVANCES
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2020-07-01 | |
卷号 | 10期号:7页码:6 |
摘要 | The correlation between density and temperature fluctuations (rho ' and T ') of the turbulent boundary layer is significantly affected by wall temperature. Direct numerical simulation databases with the ratio of wall-to-recovery temperature T-w/T-r = 0.8 and 0.15 are considered. A fitting slope method and a two-dimensional correlation method are adopted to visualize the correlated behavior. The results show that an adverse trend and a separated correlated structure are found in the buffer region, which can be treated as the effects of the correlation of rho ' and T '. To reveal the correlation, several statistical analyses are conducted. It indicates that the extreme events in the flow are suppressed with wall cooling; meanwhile, the small-scale fluctuations are enhanced. The behavior of the fluctuations results from the reduced mean swirling strength and the increased radius of the vortical structures. |
DOI | 10.1063/5.0013299 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000551864600001 |
关键词[WOS] | DIRECT NUMERICAL-SIMULATION ; WALL TEMPERATURE ; VORTICAL STRUCTURES |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
项目资助者 | National Numerical Wind Tunnel Project ; National Key Research and Development Program of China[2019YFA0405300] ; National Key Research and Development Program of China[2016YFA0401200] ; NSFC[91852203] ; Science Challenge Project[TZ2016001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDC01000000] |
论文分区 | Q3 |
力学所作者排名 | 1 |
RpAuthor | Li, Xin-Liang |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/84755 |
专题 | 高温气体动力学国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.China Aerodynam Res & Dev Ctr, Computat Aerodynam Inst, Mianyang 621000, Sichuan, Peoples R China |
推荐引用方式 GB/T 7714 | Li X,Tong FL,Yu ZP,et al. Correlation between density and temperature fluctuations of hypersonic turbulent boundary layers at Ma(infinity)=8[J]. AIP ADVANCES,2020,10,7,:6. |
APA | Li X,Tong FL,Yu ZP,&Li XL.(2020).Correlation between density and temperature fluctuations of hypersonic turbulent boundary layers at Ma(infinity)=8.AIP ADVANCES,10(7),6. |
MLA | Li X,et al."Correlation between density and temperature fluctuations of hypersonic turbulent boundary layers at Ma(infinity)=8".AIP ADVANCES 10.7(2020):6. |
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