Characterization of reflected shock tunnel air conditions using a simple method

doi:10.1063/5.0089120

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Characterization of reflected shock tunnel air conditions using a simple method
	Gu, Sangdi 2,3; Olivier, Herbert 3; Wen, Chih-Yung 2; Hao, Jiaao 2; Wang, Qiu 1
刊名	PHYSICS OF FLUIDS
	2022-05-01
卷号	34 期号:5 页码:17
ISSN号	1070-6631
DOI	10.1063/5.0089120
通讯作者	Gu, Sangdi(sangdi.gu@polyu.edu.hk)
英文摘要	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.
WOS关键词	TEST FLOW RECONSTRUCTION ; SCALE EXPANSION TUBE ; HEAT-TRANSFER ; NUMERICAL SIMULATIONS ; HYPERSONIC FLOW ; NONEQUILIBRIUM ; VALIDATION ; SOLVER
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:000797244200002
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89540]
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	Gu, Sangdi
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China 2.Hong Kong Polytech Univ, Dept Aeronaut & Aviat Engn, Kowloon, Hong Kong, Peoples R China 3.Rhein Westfal TH Aachen, Shock Wave Lab, Templergraben 55, D-52062 Aachen, Germany
推荐引用方式 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,&Wang, Qiu.(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.