中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Flow structure of pressure transmission tube and its influence on unsteady pressure measuring results in compressible flow

文献类型:期刊论文

AuthorTong XT(仝晓通)1,2; 张启帆1); Yue LJ(岳连捷)1,2; Zhang XY(张新宇)1,2
SourceAEROSPACE SCIENCE AND TECHNOLOGY
Issued Date2021
Volume108Pages:22
KeywordUnsteady pressure measurement Pressure sensor Pressure transmission tube Dynamic response Compressible flow
ISSN1270-9638
DOI10.1016/j.ast.2020.106364
Corresponding AuthorZhang, Qifan(zhangqifan@imech.ac.cn)
English AbstractThe computational fluid dynamics method is introduced to study the dynamic response of pressure transmission tubes in compressible flow. A simple theoretical model based on the flow structure was developed to reveal the physical mechanism of the tube dynamic response. According to the dominant variables in the model, the influence of Mach number, tube configuration and tube cooling was numerically studied with CFD tools. The CFD results indicate that the dynamic response characteristics of a given tube in compressible flow are significantly different from that in incompressible flow, which is important to the improvement of measurement accuracy in supersonic aerodynamic experiments. The tube effect in compressible flow includes the tap-flow interaction at the entrance of the tube and the signal damping inside the tube, and the latter is less important. The tap-flow interaction makes the pressure at the pressure tap different from the true wall pressure, and as a result the traditional models are inappropriate in compressible flow. The constraint of mass flow rate caused by the tapflow interaction contributes mainly to the pressure signal distortion in compressible flow, which was not considered in existing incompressible flow studies. The measuring pressure amplitude mainly depends on the mass flow rate through the pressure sensing hole and the stagnation enthalpy change of the inflow gas in the charge process. The influence of tube configuration is negligible for incompressible flow and low-frequency input signal, but significant for compressible flow and high-frequency signal. Generally, the measuring pressure amplitude of straight tubes is closer to the true value than that of mixed diameter tubes. It is discovered that the cooled tube wall causes more serious pressure signal damping than the adiabatic tube wall. Tube cooling can reduce the amplitude ratio by 0.1 in high enthalpy flow. In addition, a method of rapid estimation of amplitude ratios is developed based on the CFD database. (C) 2020 Elsevier Masson SAS. All rights reserved.
Classification一类
Funding ProjectNational Natural Science Foundation of China[11672309] ; National Natural Science Foundation of China[11902325] ; National Natural Science Foundation of China[11472279]
WOS KeywordBOUNDARY-LAYER ; CROSS-FLOW ; SHOCK ; SIMULATION ; ETHYLENE ; SYSTEMS ; CAVITY ; MODEL ; JET ; FG
WOS Research AreaEngineering
Language英语
WOS IDWOS:000605593400008
Funding OrganizationNational Natural Science Foundation of China
Other responsibleZhang, Qifan
源URL[http://dspace.imech.ac.cn/handle/311007/85939]  
Collection力学研究所_高温气体动力学国家重点实验室
Affiliation1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, 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
Tong XT,张启帆1),Yue LJ,et al. Flow structure of pressure transmission tube and its influence on unsteady pressure measuring results in compressible flow[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2021,108:22.
APA 仝晓通,张启帆1),岳连捷,&张新宇.(2021).Flow structure of pressure transmission tube and its influence on unsteady pressure measuring results in compressible flow.AEROSPACE SCIENCE AND TECHNOLOGY,108,22.
MLA 仝晓通,et al."Flow structure of pressure transmission tube and its influence on unsteady pressure measuring results in compressible flow".AEROSPACE SCIENCE AND TECHNOLOGY 108(2021):22.

入库方式: OAI收割

来源:力学研究所

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