Numerical Simulation of the Non-Fourier Heat Conduction in a Solid-State Laser Medium

Chin. Phys. Lett.

2006, Vol. 23

Issue (9): 2487-2490 DOI:

Original Articles

Numerical Simulation of the Non-Fourier Heat Conduction in a Solid-State Laser Medium

TAO Yu-Jia¹;HUAI Xiu-Lan¹;LI Zhi-Gang^1,2

¹Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080 ²Graduate School of Chinese Academy of Sciences, Beijing 100080

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TAO Yu-Jia, HUAI Xiu-Lan, LI Zhi-Gang 2006 Chin. Phys. Lett. 23 2487-2490

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Abstract A hyperbolic model of non-Fourier heat conduction with non-uniform heat source is used to simulate the transient heat transfer in a high-pulse-pumped solid-state laser medium. The temperature fields are numerically analysed using the finite difference method combined with the TDMA algorithm for different pump power densities, pulse durations, thermal relaxation time and cooling intensities, respectively. The calculated results are compared with those predicted by the parabolic heat conduction model based on the Fourier law. The results indicate that the non-Fourier heat conduction phenomenon in laser media should be considered when the pump power density exceeds 10⁴W/m2 or under low pulse duration. In addition, the conditions of non-Fourier effects and their influencing factors are analysed.

Keywords: 44.10.+i 44.90.+c

Published: 01 September 2006

PACS:	44.10.+i	(Heat conduction)
	44.90.+c	(Other topics in heat transfer)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2006/V23/I9/02487

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