水下控制腔内部自然对流换热特性及其影响因素研究

海洋装备电子控制腔有效散热能力是其持续工作的重要保证。以含内热源的封闭腔体为研究对象,采用基于Boussinesq近似的零方程模型对腔内空气的湍流自然对流进行建模,并使用有限体积法完成数值计算,分析了腔体内部温度分布和空气流动规律。结合控制腔功能设计要求,着重讨论了热源不同位置,铝合金隔板厚度和间距等因素对气密腔体内自然对流散热效果的影响规律。研究的结果为海底长周期运行装备控制腔热设计提供了参考依据。

ReSearch on Heat Transfer Characteristics of Natural Convection and Its Influence Factors in Underwater Control Chamber

Effective heat dissipation performance of electronic control chamber of ocean equipment is the important assurance of continuous working. This paper takes sealed chamber including internal heat source as the object of study, adopts zer;eqUation model based on the Boussinesq approximation to construction the model for natural convection in the chamber, uses finite volume method to complete numerical calculation and analyzes temperature distribution and airflow law in the chamber. In combination of function design requirement of the control chamber, this paper mainly discusses the influence law of different heat source positions, the thickness and distance of the aluminum alloy plates on natural convection heat dissipation effects in the airtight chamber. The research results provide reference for thermal design of control chamber of long-period operating equipment in the seabed.