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高速气流中激光加热平板数值模拟与分析
引用本文:胡鹏,陈发良.高速气流中激光加热平板数值模拟与分析[J].强激光与粒子束,2011,23(7).
作者姓名:胡鹏  陈发良
作者单位:北京应用物理与计算数学研究所, 北京 100088
基金项目:中国工程物理研究院科学技术发展基金
摘    要: 采用流固耦合方法,数值模拟了高速流场中激光作用下来流速度对平板温度分布的影响。结果表明:无激光辐照时,高速气流中平板有较高的气动生热平衡温度,且平板-气流之间的换热系数随来流速度增大而增大;在平板前沿换热系数增长最快,沿平板长度方向增速趋于平缓。分析了激光辐照时高速气流中激光加热平板的温度分布情况,考察了来流速度不同时,气动生热、散热和激光辐照对平板温度的影响,给出了激光辐照后的温升情况和温度分布,分析了在不同速度来流下,对流散热、摩擦生热和激光加热之间的竞争关系,结果表明,平板温度具体分布主要是加热过程竞争的结果。

关 键 词:气动加热  对流散热  激光辐照  流固耦合  热竞争
收稿时间:1900-01-01;

Numerical simulation of plane target in airflow under laser irradiation
Hu Peng,Chen Faliang.Numerical simulation of plane target in airflow under laser irradiation[J].High Power Laser and Particle Beams,2011,23(7).
Authors:Hu Peng  Chen Faliang
Institution:(Institute of Applied Physics and Computational Mathematics, P.O. Box 8009-11, Beijing 100088, China)
Abstract:A model of a plane target under laser irradiation is used to numerically simulate the temperature distribution in different speed airflow, using the thermal coupling method of gas and solid. The results show that there is a higher equilibrium temperature over the plane target when there is no laser irradiation, and the heat transfer coefficient between air and the plane target increases with the airflow speed; with a maximum value occurring at the front edge of the target, it declines along the target length. When under laser irradiation in different cases, the temperature distribution in the plane is analyzed carefully, and the influence of aerodynamic heating, forced convection cooling and laser heating is focused to compare their thermal competition,which shows that the temperature di
Keywords:forced convection cooling  laser irradiation  gas-solid coupling  thermal competition
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