Wall heat flux in a supersonic shock wave/turbulent boundary layer interaction
文献类型：期刊论文
| 作者 | Tong, Fulin3; Yuan, Xianxu3; Lai, Jiang3 ; Duan, Junyi1,2; Sun, Dong3; Dong, Siwei3; Duan JY(段俊亦)
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 34期号:6页码:16 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0094070 |
| 通讯作者 | Dong, Siwei() |
| 英文摘要 | The characteristics of wall heat flux (WHF) beneath a supersonic turbulent boundary layer interacting with an impinging shock wave with a 33.2 degrees angle at Mach 2.25 are analyzed using direct numerical simulation. It is found that the QP85 scaling, defined as the ratio of the mean WHF and wall pressure, changes across the interaction. The probability density function of the WHF fluctuations normalized by the local root-mean-squared value is similar to that of wall shear stress. Comparing the WHF and wall pressure spectra shows that the low-frequency shock unsteadiness exhibits little influence on the spectrum. The space-time correlation of the fluctuating WHF reveals that both the streamwise correlation length scale and the convection velocity experience a sharp decrease in the separation region and subsequent recovery in the downstream region. Moreover, the mean WHF in an incident shock interaction is decomposed for the first time. An analysis of the velocity and temperature fluctuations based on bidimensional empirical mode decomposition is performed to evaluate the contribution of turbulent structures with specific spanwise length scales to the mean WHF generation. The decomposed results indicate that the contribution associated with the large-scale structures in the outer region is greatly amplified by the shock interaction and has the leading role in the generation downstream of the interaction. Published under an exclusive license by AIP Publishing |
| WOS关键词 | DIRECT NUMERICAL-SIMULATION ; FLUCTUATIONS ; FLOWS ; WAVE |
| 资助项目 | National Natural Science Foundation of China[11972356] ; National Natural Science Foundation of China[91852203] ; National Key R&D Program of China[2019YFA0405300] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000806502300024 |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/89627]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 通讯作者 | Dong, Siwei |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China 3.State Key Lab Aerodynam, Mianyang 621000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tong, Fulin,Yuan, Xianxu,Lai, Jiang,et al. Wall heat flux in a supersonic shock wave/turbulent boundary layer interaction[J]. PHYSICS OF FLUIDS,2022,34(6):16. |
| APA | Tong, Fulin.,Yuan, Xianxu.,Lai, Jiang.,Duan, Junyi.,Sun, Dong.,...&段俊亦.(2022).Wall heat flux in a supersonic shock wave/turbulent boundary layer interaction.PHYSICS OF FLUIDS,34(6),16. |
| MLA | Tong, Fulin,et al."Wall heat flux in a supersonic shock wave/turbulent boundary layer interaction".PHYSICS OF FLUIDS 34.6(2022):16. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。