流场数值计算的等效势流法  

Equivalent potential flow numerical method for the flow field

作　　者：任福安[1] 吴桂涛[1] 

机构地区：[1]大连海事大学轮机工程学院,辽宁大连116026

出　　处：《大连海事大学学报》2001年第4期92-95,共4页Journal of Dalian Maritime University

摘　　要：在流场的数值计算中 ,根据势流理论 ,引入平均水力损失 ,提出了一个整个流场有旋而局部流场有势的等效势流的概念 ,不仅在理论上进行了分析和推导 ,还对某一溢流流场进行了数值计算 ,并与实验测试的结果进行了比较 ,从而给出了一个计算简便。In this paper, equivalent potential flow as a new concept is brought forward. It means that the flow is rotational in whole field but irrotational in a local flow field. By taking into account the average energy losses in the potential flow, a new numerical method is put forward. As an example, an overfall flow is simulated as potential flow and equivalent potential flow respectively. The results indicate that the later flow is more consistent with the experimental data than the former.

关 键 词：流场 数值计算 等效势流法 有限元 流体力学 

分 类 号：O35[理学—流体力学]