Transient cavitating flow in piping systems
- Authors: Anton BERGANT
- Citation: Acta hydrotechnica, vol. 18, no. 29, pp. 3-21, 2000.
- Abstract: A change of flow velocity in a piping system induces either an increase or a decrease in pressure. Liquid column separation occurs when the pressure drops to the liquid vapour pressure. This paper deals with physical phenomena of transient vaporous cavitating flow in pipelines. Column separation in pipelines is described by a set of equations representing a particular physical state of the fluid. The equations are solved separately by analytical and numerical methods. The solution methods are integrated into a discrete vapour cavity model and an interface vaporous cavitation model. Numerical results are compared with the results of laboratory measurements. A comparison between the results shows that the interface model simulates the physics of the transient cavitating flow more accurately than the discrete vapour cavity model.
- Keywords: piping systems, transient cavitating flow, water hammer, vaporous cavitation, water column separation, discrete cavity model, interface vaporous cavitation model, experimental apparatus
- Full text: a29-ab.pdf