A method to measure time lag constants of heat conduction equations |
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Authors: | H Basirat Tabrizi S Andarwa |
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Affiliation: | Department of Mechanical Engineering, Amirkabir University of Technology, Po Box 15875-4413, Tehran, Iran |
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Abstract: | Technique based on frequency response is suggested for the measuring of time lag constants in heat conduction problem. Steady state temperature distribution at a semi infinite medium subjected to periodic heat flux for non-Fourier, Dual Phase Lag, and T wave models are found and thermal impedances are acquired. The time lags of these models can be found by measuring thermal impedance. Because of the difficulties concerning generating and measuring high frequencies, it is focused on the minimum required frequency to achieve a suitable accuracy. Some notes and a procedure are proposed to determine time lags of mentioned models with desired accuracy. |
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Keywords: | Non-Fourier Thermal wave Frequency response Thermal impedance Semi infinite medium Measuring procedure |
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