两种浸入式边界方法的比较

被引：6

作者：

谢胜百

单鹏

机构：

[1] 北京航空航天大学能源与动力工程学院

来源：

力学学报 | 2009年 / 41卷 / 05期

关键词：

浸入式边界方法; 不可压缩流场; 投影法; 圆柱绕流; 连续显力法; 离散隐力法;

D O I：

暂无

中图分类号：

O35 [流体力学];

学科分类号：

080103 ; 080704 ;

摘要：

介绍两类不同的浸入式边界方法及其对它的改进.然后采用均匀矩形交错网格和压力校正投影法,对不可压流场中的二维圆柱绕流进行了数值求解并对比了两类方法的精度.计算分析表明,连续显力法具有构造简单,适用性强的优点.但离散隐力法在物面边界精度上要优于前者.改进后,在二阶精度的离散格式下物面边界精度较低的显示力源法的精度有一定提高,同时发现,加密网格以提高数值精度的方法对于连续显力法并不总是有效.而同样格式下,离散隐力法具有更高精度,其中预测-校正离散隐力法可以在此基础上获得更小的计算误差和更快的收敛速度.数值解与文献已有的数值和实验结果吻合得很好,表明边界算法及其程序是可靠和有效的.

引用

页码：618 / 627

页数：10

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