摘要
建立了矩形激光晶体的热传导模型。通过充分考虑晶体侧面与冷却液之间的对流传热,以及晶体端面与外界的热传导,建立了更为合理的边界条件。利用有限元差分法求解泊松方程,得到激光晶体内温度和温度场分布。研究结果表明,在考虑晶体的侧面对流和端面导热的情况下,得出了更符合实际的晶体温度场分布,计算的热焦距与实验测量结果更为吻合。
The thermal conduct model of rectangular laser crystal is established. Considering the heat convection be- tween the side surface of the crystal with the cool water as well as the convective heat-transfer about the pumped surface, the more rational boundary conditions are established. Using finite element difference method and Poisson equation, temperature field in the crystal is obtained. The results show that the convective heat-transfer about the pumped surface and the side surface of the crystal can lead to more actual temperature field, the focal length is more coincident with the experiment.
出处
《光学技术》
CAS
CSCD
北大核心
2012年第6期725-728,共4页
Optical Technique
基金
国家自然科学基金(61078032)
关键词
端面泵浦
POISSON方程
对流传热
温度场
热效应
end pumped
Poisson equation
convective heat-transfer
temperature field
thermal effect
