Title of article :
Thermal diffusivity estimation using numerical inverse solution for 1D heat conduction
Author/Authors :
Neven Ukrainczyk، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
7
From page :
5675
To page :
5681
Abstract :
This work presents an improved apparatus and a numerical approach to obtain the estimate of thermal diffusivity of complex materials. Transient thermal response at the axis of cylindrical sample is measured when boundary temperature is suddenly changed. Instead of assuming an ideal step temperature excitement, a measured temperature of a material boundary was employed. An iterative procedure, based on minimizing a sum of squares function with the Levenberg–Marquardt method, is used to solve the inverse problem. A graphical user interface is built to enable easy use of the inverse thermal diffusivity estimation method. The reference materials used to evaluate the method are Agar water gel, glycerol and Ottawa quartz sand.
Keywords :
Thermal diffusivity , Inverse problem , Porous medium , Levenberg–Marquardt Method
Journal title :
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Serial Year :
2009
Journal title :
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Record number :
1076357
Link To Document :
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