| Coaxial Thermocouples for Heat Transfer Measurements in Long-Duration High Enthalpy Flows | |
Zhang SZ(张仕忠)1; Wang Q(汪球)1 ; Li JP(李进平)1; Zhang XY(张晓源)1; Chen H(陈宏)1,2
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| Corresponding Author | Li, Jinping([email protected]) |
| Source Publication | SENSORS
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| 2020-09-01 | |
| Volume | 20Issue:18Pages:18 |
| Abstract | Coaxial thermocouples have the advantages of fast response and good durability. They are widely used for heat transfer measurements in transient facilities, and researchers have also considered their use for long-duration heat transfer measurements. However, the model thickness, transverse heat transfer, and changes in the physical parameters of the materials with increasing temperature influence the accuracy of heat transfer measurements. A numerical analysis of coaxial thermocouples is conducted to determine the above influences on the measurement deviation. The minimum deviation is obtained if the thermal effusivity of chromel that changes with the surface temperature is used to derive the heat flux from the surface temperature. The deviation of the heat flux is less than 5.5% when the Fourier number is smaller than 0.255 and 10% when the Fourier number is smaller than 0.520. The results provide guidance for the design of test models and coaxial thermocouples in long-duration heat transfer measurements. The numerical calculation results are verified by a laser radiation heating experiment, and heat transfer measurements using coaxial thermocouples in an arc tunnel with a test time of several seconds are performed. |
| Keyword | heat transfer measurement coaxial thermocouple long-duration semi-infinite high enthalpy |
| DOI | 10.3390/s20185254 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000581980800001 |
| WOS Keyword | THERMAL PRODUCT |
| WOS Research Area | Chemistry ; Engineering ; Instruments & Instrumentation |
| WOS Subject | Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation |
| Funding Project | China Scholarship Council ; National Natural Science Foundation of China[11402275] ; National Natural Science Foundation of China[11472280] |
| Funding Organization | China Scholarship Council ; National Natural Science Foundation of China |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Li, Jinping |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/85391 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang SZ,Wang Q,Li JP,et al. Coaxial Thermocouples for Heat Transfer Measurements in Long-Duration High Enthalpy Flows[J]. SENSORS,2020,20,18,:18.Rp_Au:Li, Jinping |
| APA | 张仕忠,汪球,李进平,张晓源,&陈宏.(2020).Coaxial Thermocouples for Heat Transfer Measurements in Long-Duration High Enthalpy Flows.SENSORS,20(18),18. |
| MLA | 张仕忠,et al."Coaxial Thermocouples for Heat Transfer Measurements in Long-Duration High Enthalpy Flows".SENSORS 20.18(2020):18. |
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| File Name/Size | DocType | Version | Access | License | ||
| Jp2020298.pdf（7131KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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