基于微通道散热的板条激光放大器热仿真分析
Thermal simulation analysis for slab laser amplifier based on microchannel heat sink
吴頔 1于宇 1李凯 1于恒哲 1许志鹏 1李云飞 1王汞 1白振旭 1王玺 2王君光 3张永宁 3王毕艺 3王雨雷 1吕志伟1
作者信息
- 1. 河北工业大学先进激光技术研究中心,天津 300401;河北省先进激光技术与装备重点实验室,天津 300401
- 2. 国防科技大学脉冲功率激光技术国家重点实验室,安徽合肥 230037
- 3. 电磁空间安全全国重点实验室,天津 300308
- 折叠
摘要
众所周知,热效应是限制大功率高能量激光器发展的一大瓶颈,在高能激光产生的过程中伴随着大量的废热产生,影响高能量激光器的光束质量甚至会影响其正常工作.为了保证高能量激光器的稳定运作并研究其工作物质的散热过程中的热分布状态,本文建立了一种用于高能Zig-Zag板条激光放大器的双端入水微通道散热模型,利用CFD模拟仿真软件在额定工况下对微通道与空腔热沉进行散热对比,还研究了模型的可变参量:通道高度、翅片厚度,以及水流量对于散热性能的影响.模拟研究发现本文提出的微通道热沉冷却效果优于全腔水冷效果,微通道热沉将晶体表面最高温差控制在4℃以内,表面温度也降低了32％;同时在压降允许范围内优化通道参数能再将冷却效果提升10％,实现增益介质分布式高效散热.
Abstract
As is well known,thermal effect is a major bottleneck limiting the development of high-power and high-en-ergy lasers.During the process of producing high-energy lasers,a large amount of waste heat is generated,which af-fects the beam quality of high-energy lasers and even their normal operation.In order to ensure the stable operation of the high-energy laser and study the heat distribution state of its working material in the process of heat dissipation,this paper establishes a dual end water entry microchannel heat dissipation model for high-energy Zig-Zag Flat noodles la-ser amplifier.The heat dissipation of microchannel and cavity heat sink is compared under rated conditions using CFD simulation software.The variable parameters of the model are also studied:channel height,fin thickness,And the im-pact of water flow rate on heat dissipation performance.Simulation studies have found that the cooling effect of the mi-crochannel heat sink proposed in this article is better than that of full cavity water cooling.The microchannel heat sink controls the maximum temperature difference on the crystal surface within 4 ℃,and the surface temperature is al-so reduced by 32％;Optimizing channel parameters within the allowable range of pressure drop can further improve the cooling effect by 10％,achieving distributed and efficient heat dissipation of gain media.
关键词
大功率高能量/板条激光放大器/微通道热沉/冷却效果/CFDKey words
high power and high energy/slab laser amplifier/microchannel heat sink/cooling effect/CFD引用本文复制引用
基金项目
国家自然科学基金(62005074)
国防基础科研项目(JCKY2023230C010)
河北省自然科学基金(F2021202002)
出版年
2024
NETL
NSTL
万方数据