有压输水管道系统气液两相瞬变流研究综述

Gasliquid twophase transient flows in pressurized water conveyance pipe system

综述一个多世纪以来,有压输水管道系统中有关气体释放、空穴流及液柱分离、计算分析方法、水锤防护及实验研究等方面的主要研究进展,并提出还需对气液两相瞬变流基本理论、空气进排气阀的特性、截留气团的动态特性和动力特性、实际工程优化设计理论等诸多方面进一步研究.

Advances are summarized in the research of gas release, cavitation flows and column separation, waterhammer protection, and methods for their calculation and experiments. It is suggested that a further study should be performed on the basic theory of gasliquid twophase transient flow, the characteristics of air valves, and dynamic state of trapped air, and on the theory of optimal design of projects.