An experimental apparatus was designed and fabricated to measure the effective thermal conductivities and simulate the temperature and pressure history of reentry of a launch vehicle into a planetary atmosphere with a maximum temperature of . An improved testing method was used to test the thermal conductivities of an alumina fibrous insulation at environmental pressures from with the average temperature of the sample increased to and its density being . A method based on temperature difference is used to compute the in-plane effective thermal conductivity, and the result shows that the in-plane thermal conductivity along the axis is 1.47 times that along the axis. The influences of temperature and pressure on the contribution of three heat transfer mechanisms to the effective thermal conductivities were compared.
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An Experimental Study of Effective Thermal Conductivity of High Temperature Insulations
Bo-ming Zhang,
Bo-ming Zhang
Center for Composite Material,
Harbin Institute of Technology
, Harbin 150080, China
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Wei-hua Xie,
Wei-hua Xie
Center for Composite Material,
Harbin Institute of Technology
, Harbin 150080, China
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Shan-yi Du,
Shan-yi Du
Center for Composite Material,
Harbin Institute of Technology
, Harbin 150080, China
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Shu-yuan Zhao
Shu-yuan Zhao
Center for Composite Material,
Harbin Institute of Technology
, Harbin 150080, China
Search for other works by this author on:
Bo-ming Zhang
Center for Composite Material,
Harbin Institute of Technology
, Harbin 150080, China
Wei-hua Xie
Center for Composite Material,
Harbin Institute of Technology
, Harbin 150080, China
Shan-yi Du
Center for Composite Material,
Harbin Institute of Technology
, Harbin 150080, China
Shu-yuan Zhao
Center for Composite Material,
Harbin Institute of Technology
, Harbin 150080, ChinaJ. Heat Transfer. Mar 2008, 130(3): 034504 (4 pages)
Published Online: March 6, 2008
Article history
Received:
September 30, 2006
Revised:
June 18, 2007
Published:
March 6, 2008
Citation
Zhang, B., Xie, W., Du, S., and Zhao, S. (March 6, 2008). "An Experimental Study of Effective Thermal Conductivity of High Temperature Insulations." ASME. J. Heat Transfer. March 2008; 130(3): 034504. https://doi.org/10.1115/1.2804946
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