Hydrodynamic characteristics of a butterfly valve - Prediction of pressure loss characteristics

被引：53

作者：

Kimura, T

Tanaka, T

Fujimoto, K

Ogawa, K

机构：

[1] Kobe University, Faculty of Engineering, Kobe, Rokko, Nada

[2] Kobe University, Graduate School of Science and Technology, Kobe, Rokko, Nada

来源：

ISA TRANSACTIONS | 1995年 / 34卷 / 04期

关键词：

butterfly valve; contraction flow; performance prediction; cavitation;

D O I：

10.1016/0019-0578(95)00024-0

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Investigation on fluidmechanic performance on a butterfly valve has been carried out. A practical valve model of a given thickness and a hub is used for the loss coefficient theory. A theoretical loss coefficient has been formulated from a contraction factor obtained by applying the generalized Borda mouthpiece theory. Cavitation stages (such as cavitation inception, supercavitation inception, cavitation damage inception, choking cavitation) have been theoretically predicted from the valve loss coefficient. The cavitation prediction has been carried out by applying the free streamline theory, where the relation between the loss coefficient and the critical cavitation factor has been formulated. The results of the theoretical prediction equations agree well with the experimental results.

引用

页码：319 / 326

页数：8