Technical Paper

Analytical Approaches To Modeling Transient Vaporous Cavitation in Multi-Pipe Fluid Systems

Jun 23, 1991
1 minute read
Trey Walters, P.E.
Trey Walters, P.E.
Trey Walters is currently Principal, R&D, Engineering Software at Datacor. He previously founded Applied Flow Technology which is now part of Datacor. He has developed simulation software for pipe flow, system optimization, slurries, waterhammer, and pulsation modeling. He has 40 years of experience in thermal/fluid system engineering and has consulted in numerous industries including power, municipal water, oil & gas and chemicals. He holds both a Bachelor and Masters Degree in Mechanical Engineering. He sits on several standards committees of the Hydraulic Institute and is Chairman of their Waterhammer Committee, and he is a Fellow of the ASME.

Trey Walters, P.E., Datacor, Inc. - Presented at the first ASME / JSME Fluids Engineering Conference June 23-27, 1991 Portland, OR

The formation of vapor cavities in piping systems experiencing column separation during liquid transient flow is of engineering interest because of the very high transient pressures that can occur when the vapor cavities collapse. Several approaches have been proposed for modeling vaporous cavitation in single-pipe fluid systems.

One approach for modeling this phenomenon is the Vaporous Cavitation Model (VCM). The VCM method for a single-pipe system is described by Streeter (1972) and amplified by Wylie and Streeter (1983). In order to model vaporous cavitation in a complex multi-pipe system, analytical expressions are required for the fluid connecting elements that join the pipes together. Although the VCM method has been used for many years, it is difficult to find descriptions in the open literature of how the VCM method is applied to common fluid system connecting elements.

This paper describes how the VCM method was applied at General Dynamics Space Systems Division.

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