Abstract: A discrete free gas model is presented for numerical simulation of transients in liquids containing free gas. The model is also able to simulate vapor column separation during liquid transient ...

Abstract: The basic continuity equation, as it appears in liquid hammer problems, in terms of velocity, and pressure or piezometric head is examined. The term involving the slope of the pipeline is logically removed from the equation ...

Abstract: A number of concepts related to computer studies of transient flow in pipeline systems are addressed. The topics are directed to applications on microcomputers, but are not limited to that special purpose. The topics include ...

Abstract: An unsteady isentropic flow model is presented to calculate the two-dimensional flow field in an arbitrarily closed region or in an open fluid domain. In the open domain, a unique boundary ...

Abstract: The nature of hydraulic transients in rock‐bored tunnels is expected to be frequency‐dependent. Three issues related to the frequency dependence are addressed in this paper. A complex‐valued and frequency‐dependent wave ...

Abstract: The use of interpolations in time, rather than the more widely used spatial interpolations, demonstrates several benefits in the application of the method of characteristics to wave problems in hydraulics. Two such time‐line ...

Abstract: Water-hammer pressures in a pipeline due to the collapse of a vapor cavity adjacent to a valve are investigated. A water-hammer event is initiated by the closure of a valve in a simple reservoir-pipeline-valve system. The ...