侧面泵浦固体激光器冷却结构数值分析

摘要

针对侧面泵浦固体激光器的强制对流冷却结构，利用CFD软件Ansys Fluent数值分析了在冷却结构中添加分流隔板对流动状况的影响，计算了特定流量时冷却结构的压降，并在该冷却条件下得到增益介质自身的温度分布。计算结果表明：分流隔板对冷却结构整个阻力的影响可以忽略，但对通道内水流状况具有明显的影响，由于板条两侧水流的不对称性以及同一侧水流的不均匀性，导致增益介质自身的温度分布也存在较大的不一致。%For forced convection cooling structure in side-pumped solid-state laser,the influence of orifice plates in the cooling structure on the flow state was analyzed by the commercial CFD software Ansys Fluent. The pressure drop of the cooling structure was computed under specific flow,and temperature distribution of Nd ∶YAG was obtained under the cooling condition. The results show that orifice plates have no effect on flow resistance of the cooling structure,but they have a prominent influence on the flow state. The asymmetric flow at both sides of Nd ∶YAG and the uneven flow at one side of Nd ∶YAG will lead to different temperature distributions of Nd ∶YAG.