Theoretical Analysis of Gas Release during Transient Process of Hydraulic Transients

Abstract

In the process of hydraulic transient, Cavities water hammer is more serious than the traditional water hammer, the gas content and gas release in the water is very important to establish the simulation model. Through the theoretical analysis of the gas release during the transient process of the hydraulic transient, there are two important conclusions are drawn: 1) the critical point is the boundary of the existence of bubbles. 2) the critical pressure p* is always less than the water vaporization pressure PV, and the bubble radius of RO is greater, the critical pressure is closer to the vaporization pressure of water. Put the water vaporization pressure constant value for the constant pressure of the drying cavity is consistent with the actual, served as a moment of containing gas rate calculation method. Finally it puts forward the consideration of gas release water hammer mathematic model.