Study on Influences of Some Factors on the Test of Periodic Heat Flow Method
A classical thermal conductivity measuring method, called Periodic heat flow method, has been improved in this paper. Adopting the method of experimental study and numerical simulation, a test system which is simple, feasible and credible has been designed for determining thermal conductivity. The influences of some factors on the test results were analyzed by using the simulation software of Fluent, including thickness of thermal insulating layer, length and diameter of specimen, location of tested points, boundary conditions of the cold side and heating frequency. Then the thermal conductivity of several samples were tested to proof the correctness of the results of numerical simulation and then the design for the test device was optimized. Therefore errors have been decreased.
Metrology Periodic heat flow method Numerical simulation Thermal conductivity
XU Xin CHEN Xiao-ling ZHOU Jie-min
School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China
国际会议
2008年国际温度与热物性测量会议(TEMP BEIJING 2008)
北京
英文
320-325
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）