| Characterization of reflected shock tunnel air conditions using a simple method | |
Gu, Sangdi1,2; Olivier, Herbert1; Wen, Chih-Yung2; Hao, Jiaao2; Wang Q(汪球)3
| |
| Corresponding Author | Gu, Sangdi(sangdi.gu@polyu.edu.hk) |
| Source Publication | PHYSICS OF FLUIDS
 |
| 2022-05-01 | |
| Volume | 34Issue:5Pages:17 |
| ISSN | 1070-6631 |
| Abstract | A new method to characterize air test conditions in hypersonic impulse facilities is introduced. It is a hybrid experimental-computational rebuilding method that uses the Fay-Riddell correlation with corrections based on thermochemical nonequilibrium computational fluid dynamic results. Its benefits include simplicity and time-resolution, and using this method, a unique characterization can be made for each individual experimental run. Simplicity is achieved by avoiding the use of any optical techniques and overly expensive numerical computations while still maintaining accuracy. Without making any assumptions to relate the reservoir conditions to the nozzle exit conditions, the work done characterizing four test conditions in a reflected shock tunnel is presented. In this type of facility, shock compression is used to produce an appropriate reservoir, which is then expanded through a nozzle to produce hypersonic flow. Particular focus is given to the nozzle exit total enthalpy where a comparison is made with the reservoir enthalpy obtained using the measured shock speed and pressure in the shock tube. Good agreement is observed in all cases providing validation of the new approach. Additionally, static pressure measurements showed clearly that conditions III and IV have a thermochemical state which likely froze shortly after the nozzle throat. Also, the nozzle flow is shown to be almost isentropic. Due to the simplicity of the current method, it can be easily implemented in existing facilities to provide an additional independent estimate alongside existing results. Published under an exclusive license by AIP Publishing. |
| DOI | 10.1063/5.0089120 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000797244200002 |
| WOS Keyword | TEST FLOW RECONSTRUCTION ; SCALE EXPANSION TUBE ; HEAT-TRANSFER ; NUMERICAL SIMULATIONS ; HYPERSONIC FLOW ; NONEQUILIBRIUM ; VALIDATION ; SOLVER |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Classification | 一类/力学重要期刊 |
| Ranking | 3+ |
| Contributor | Gu, Sangdi |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/89541 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Rhein Westfal TH Aachen, Shock Wave Lab, Templergraben 55, D-52062 Aachen, Germany; 2.Hong Kong Polytech Univ, Dept Aeronaut & Aviat Engn, Kowloon, Hong Kong, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Gu, Sangdi,Olivier, Herbert,Wen, Chih-Yung,et al. Characterization of reflected shock tunnel air conditions using a simple method[J]. PHYSICS OF FLUIDS,2022,34,5,:17. |
| APA | Gu, Sangdi,Olivier, Herbert,Wen, Chih-Yung,Hao, Jiaao,&汪球.(2022).Characterization of reflected shock tunnel air conditions using a simple method.PHYSICS OF FLUIDS,34(5),17. |
| MLA | Gu, Sangdi,et al."Characterization of reflected shock tunnel air conditions using a simple method".PHYSICS OF FLUIDS 34.5(2022):17. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2022FA389_2022_Cha（6323KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment