方腔内带双圆柱体自然对流三维计算研究

Three-Dimensional Calculating Research of the Double Cylinder Natural Convection in the Cavity

基于计算流体力学理论,采用有限体积法建立辐射模型,对长、宽、高均为5 m的方腔内带双圆柱体进行了三维计算研究。分析了腔内双圆柱体中心轴线间距、管径以及方腔的左壁面温度和右壁面温度对腔内沿Z轴各截面的平均温度分布的影响。研究结果表明,双圆柱体中心轴线间距越大,在腔的左右壁面处对流强度越强;双圆柱体管径越大,对流强度越弱;左壁面温度越高,对流强度越弱;右壁面温度越高,自然对流越强烈。该结果可为试验研究提供一定的参考。

Based on computational fluid dynamics theory, use the finite volume method to establish the radiation model, research the three-dimensional double cylinder natural convection in the Cavity, whose length, width and height are 5 meter. analysis center axis spacing of the two cylinder,diameter,the left wall temperature, the right wail temperature have influence on temperature distribution in the cavity.The result show that： the greater 2cylinder central axis spacing, the weaker convection strengh; the higher the temperature of the left wall, the weaker convection strengh; the higher the temperature of the right wall,the strengher the natural eonvenvtion.The results can provide some reference for the experimental research.