Journal ArticleDOI
The Effect of Gaseous Cavitation on Fluid Transients
David C. Wiggert,M. J. Sundquist +1 more
Reads0
Chats0
TLDR
In this article, the authors investigated the gas release in turbulent pipe flows subjected to transient wave motion in a 295m laboratory pipeline, where the flow is characterized by wave dispersion due to the increase in void fraction.Abstract:
Gaseous cavitation (alternately termed gas release) is investigated for turbulent pipe flows subjected to transient wave motion. Experimental data are presented that exhibit developing 2-component flow (air or carbon dioxide and water mixtures) in a 295-m laboratory pipeline; the flow is characterized by wave dispersion due to the increase in void fraction. An analytical model based on the method of characteristics yields simultaneous solutions for pressure, velocity, and void fraction. The greatest uncertainty in the formulation is the rate of gas release; in this instance, it is allowed to depend upon the difference between saturation and instataneous line pressures. 28 references.read more
Citations
More filters
MonographDOI
Hydrodynamics of Pumps
TL;DR: In this article, the authors focus on the design issues associated with the flow of liquid through a rotating machine and the potential for cavitation and the high density of liquids that enhances the possibility of damaging unsteady flows and forces.
Journal ArticleDOI
Water hammer with column separation: A historical review
TL;DR: In this paper, a comprehensive survey of laboratory tests and field measurements is given, focusing on transient vaporous cavitation and steam condensation are beyond the scope of the paper. But they do not cover the effects of column separation in a pipeline.
Journal ArticleDOI
Effects of Two-Dimensionality on Pipe Transients Modeling
TL;DR: In this article, the authors discuss the rapid damping of pressure peaks in a water-hammer phenomenon after the end of a complete valve-closure maneuver, which is due to flow characteristics not considered when one-dimensional models are employed.
DissertationDOI
Investigation on the effects of entrained air in pipelines
TL;DR: In this paper, the authors developed a computational program for the quantitative assessment of the effects of entrained air in pipeline systems with respect to their operational safety, and evaluated the computations corresponding to this study by using the method of characteristics.
Journal ArticleDOI
Investigation of Hydraulic Transients in a Pipeline with Column Separation
TL;DR: In this article, a new discrete vapor cavity model (DVCM) was proposed for numerical prediction of pressure changes during the water hammer with liquid column separation together with results of preliminary experimental verification of this method.