• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 26 Issue 6
Dec.  2013
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Article Contents
QIN Feng, HE Chuan, ZENG Lei, KONG Rongzong, LIU Jichun. Experimental Research of Heat-Transfer Measurements on Stagnation Points[J]. Journal of Southwest Jiaotong University, 2013, 26(6): 1072-1077. doi: 10.3969/j.issn.0258-2724.2013.06.016
Citation: QIN Feng, HE Chuan, ZENG Lei, KONG Rongzong, LIU Jichun. Experimental Research of Heat-Transfer Measurements on Stagnation Points[J]. Journal of Southwest Jiaotong University, 2013, 26(6): 1072-1077. doi: 10.3969/j.issn.0258-2724.2013.06.016

Experimental Research of Heat-Transfer Measurements on Stagnation Points

doi: 10.3969/j.issn.0258-2724.2013.06.016
  • Received Date: 05 Apr 2012
  • Publish Date: 25 Dec 2013
  • In order to improve the measurement precision of stagnation point heat transfer in shock tunnel tests, a research on developing a coaxial thermal-couple of 1 mm diameter and improving the endurance of thin-film heat-transfer sensors was carried out. Data processing methods of the two sensors were established based on the theoretical model for the inverse problem of heat conduction. Five heat transfer sensors of different types and dimensions were tested in a shock tunnel of 2 m diameter. The test results were compared to those calculated by F-R formula, and the influences of factors such as sensor shape, hot wall, sensing elements, and film thickness on the test results were analyzed. The results show that the response time of the coaxial thermal couple satisfies the test requirement, and the repeatability error of the thin film heat transfer sensor was is less than 8%.

     

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