指定压力边界条件在无限空间自然对流数值模拟中的应用  

Application of Specified Pressure Boundary Condition to the Simulation of Natural Convection in an Infinite Space

作　　者：丁鹏[1] 李安桂[1] 陶文铨[2] 

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]西安交通大学,陕西西安710049

出　　处：《工业加热》2005年第2期14-17,共4页Industrial Heating

摘　　要：探讨了指定压力边界条件在无限空间自然对流模拟中的数值实施方法。指出了由边界的指定压力转化为速度的方法。以常壁温圆柱在无限空间的二维层流自然对流为例,实施了这种方法,计算结果与其它数值解、试验值和分析解的对比表明,本方法不但实施方便而且可以采用较小的计算区域而获得正确的结果,节省了计算时间和计算存储量。The purpose of this article is to present a new numerical method for the prediction of natural convection in an infinite space. The procedure for the implementation of specified pressure boundary condition was proposed. The method for the recovery of boundary velocity from the specified boundary condition was given out. This method was applied for the simulation of natural convection from a cylinder in an infinite space. The result show good agreement with the experiment values and other numerical works。

关 键 词：新数值方法 指定压力边界条件 自然对流 高阶格式 

分 类 号：TK124[动力工程及工程热物理—工程热物理]