| Hypersonic flow and heat transfer of a micro-rough plate in the near-continuum regime | |
| Guo, Jinghui1; Wang XY(王小永)2; Li, Sijia1; Lin, Guiping1 | |
| Corresponding Author | Wang, Xiaoyong(wangxy@imech.ac.cn) |
| Source Publication | PHYSICS OF FLUIDS
 |
| 2023-10-01 | |
| Volume | 35Issue:10Pages:21 |
| ISSN | 1070-6631 |
| Abstract | Hypersonic near-continuum flow over a flat plate with micro-scale roughness is studied using the kinetic direct simulation Monte Carlo method on roughness module configurations with different relative roughness (h) values and roughness densities (R-N) under a matrix of freestream parameters (Mach number Ma(infinity), Reynolds number Re-infinity, temperature T-infinity, and Knudsen number Kn(infinity)). An open-source Stochastic PArallel Rarefied-gas Time-accurate Analyzer code, which enables Cartesian grid adaption and efficient parallelization, is utilized for the rough-plate flow simulations. Flowfield analysis reveals that the local patterns inside the roughness modules evolve starting from closed (two vortices) via transitional ultimately to open (one vortex) by an increase in h, with co-existing shrinkage of high-density zones and attenuation of density peaks. The surface quantities are significantly influenced by the flowfield characteristics, and a local association between the peak heat flux and the peak pressure is identified. Non-dimensional peak heating and pressure correlation laws for the local peak heat flux and pressure coefficients in terms of two length-scale transformations are proposed, enabling the capture of local heating and pressure extrema on rough plates with varying h and R-N conditions under different Ma(infinity), Re-infinity, and T-infinity parameter values. The peak heat flux and pressure coefficients can be described by analogous correlating equations expressed by first-order-polynomial or power functions. An increase in the rarefaction degree (Kn(infinity)) deviating from the near-continuum regime causes the correlation laws to fail. |
| DOI | 10.1063/5.0170266 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001169985200006 |
| WOS Keyword | BOUNDARY-LAYER ; TRANSITION EXPERIMENTS ; DISTRIBUTED ROUGHNESS ; NUMERICAL-SIMULATION ; SEPARATED FLOWS ; CAVITY ; AUGMENTATION |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | National Natural Science Foundation of China[12102025] ; National Natural Science Foundation of China[12002348] ; National Natural Science Foundation of China[030810-ZG216S2312] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Wang, Xiaoyong |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/94608 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Guo, Jinghui,Wang XY,Li, Sijia,et al. Hypersonic flow and heat transfer of a micro-rough plate in the near-continuum regime[J]. PHYSICS OF FLUIDS,2023,35,10,:21. |
| APA | Guo, Jinghui,王小永,Li, Sijia,&Lin, Guiping.(2023).Hypersonic flow and heat transfer of a micro-rough plate in the near-continuum regime.PHYSICS OF FLUIDS,35(10),21. |
| MLA | Guo, Jinghui,et al."Hypersonic flow and heat transfer of a micro-rough plate in the near-continuum regime".PHYSICS OF FLUIDS 35.10(2023):21. |
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