IMECH-IR  > 高温气体动力学国家重点实验室
Influence of Thermal Sensor Installation on Measuring Accuracy at Stagnation Points
Wang Q(汪球); Li JP(李进平); Zhao W(赵伟); Jiang ZL(姜宗林); Li, JP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
Source PublicationJOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
2017-04-01
Volume31Issue:2Pages:318-323
ISSN0887-8722
Abstract

The development of suitable heat-resistant material and reasonable thermal structure design for a hypersonic aircraft requires highly precise heat transfer prediction, especially at the wing tips or stagnation points where the thermal environment is particularly rigorous. Unfortunately, existing techniques for measuring heat flux via thermal sensors in hypersonic test facilities are excessively complex; any slight deviation from ideal conditions may lead to inaccuracy. In this study, the influence of installation on the accuracy of heat flux measurement for a sphere model using cylindrical thermal sensors was numerically investigated. The sensors examined were protruding or recessed from the model surface on the order of 0.1-0.5 mm, and the influence of variations in installation was estimated by comparing the results against the smoothly installed sensor. Experiments were also run using different Reynolds numbers and sensor diameters to ensure the rules and mechanisms reported are as comprehensive as possible. Results showed that " unsmooth" (i. e., protruding, recessed) installation creates substantial deviation from the actual heat transfer rate; protruding installation resulted in larger deviation than recessed, and the deviation of either installation configuration grew more severe at larger depths from the model surface.

DOI10.2514/1.T4971
Indexed BySCI ; EI
Language英语
WOS IDWOS:000405487600006
WOS KeywordHEAT-TRANSFER ; COMPUTATIONS
WOS Research AreaThermodynamics ; Engineering
WOS SubjectThermodynamics ; Engineering, Mechanical
Funding OrganizationNational Natural Science Foundation of China(11402275 ; 11472280 ; 11532014)
DepartmentLHD解离气体动力学 ; LHD激波与爆轰物理
ClassificationQ3
Ranking1
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60912
Collection高温气体动力学国家重点实验室
Corresponding AuthorLi, JP (reprint author), 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
Wang Q,Li JP,Zhao W,et al. Influence of Thermal Sensor Installation on Measuring Accuracy at Stagnation Points[J]. JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER,2017,31(2):318-323.
APA 汪球,李进平,赵伟,姜宗林,&Li, JP .(2017).Influence of Thermal Sensor Installation on Measuring Accuracy at Stagnation Points.JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER,31(2),318-323.
MLA 汪球,et al."Influence of Thermal Sensor Installation on Measuring Accuracy at Stagnation Points".JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER 31.2(2017):318-323.
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