基于有限体积数值方法, 给出传统脉冲工作模式下等离子体普克尔盒内流固耦合对流换热系数, 根据重复频率应用下热学要求, 对放电腔进行重新设计以增大对流换热强度。数值模拟显示：由于工作气压低、抽速小、放电腔设计未考虑热学需求, 传统工作模式下对流换热系数太低, 为1.01 W/(m2·K); 通过改变流体抽速、流体工作气压、增加进出口管道、改变进出口管道排布方式、增大进出口管道管径有效地提高了对流换热强度, 对流换热系数达到8.02 W/(m2·K)。

Based on the finite volume modular, the coefficient of convective heat transfer is studied, when plasma electrodes Pockels′ cell is operated at conventional pulse mode. Considering requirement of thermodynamics, the discharge cavity is redesigned to enhance convective heat transfer. The results indicate: at conventional mode, the coefficient of convective heat transfer is too small, 1.01 W/(m2·K), because of low operation pressure, low pumping speed, no considering of thermodynamics requirement. By pushing the pumping speed, increasing operating pressure, augmenting pipe diameter, and redesigning arrangement of inlets and outlets, coefficient of convective heat transfer is enhanced prominently, which reaches to 8.02 W/(m2·K).