Pipeline Column Separation Flow Regimes
- 1 August 1999
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Hydraulic Engineering
- Vol. 125 (8), 835-848
- https://doi.org/10.1061/(asce)0733-9429(1999)125:8(835)
Abstract
A generalized set of pipeline column separation equations is presented describing all conventional types of low-pressure regions. These include water hammer zones, distributed vaporous cavitation, vapor cavities, and shocks (that eliminate distributed vaporous cavitation zones). Numerical methods for solving these equations are then considered, leading to a review of three numerical models of column separation. These include the discrete vapor cavity model, the discrete gas cavity model, and the generalized interface vaporous cavitation model. The generalized interface vaporous cavitation model enables direct tracking of actual column separation phenomena (e.g., discrete cavities, vaporous cavitation zones), and consequently, better insight into the transient event. Numerical results from the three column separation models are compared with results of measurements for a number of flow regimes initiated by a rapid closure of a downstream valve in a sloping pipeline laboratory apparatus. Finally, conclusion...Keywords
This publication has 10 references indexed in Scilit:
- Numerical Comparison of Pipe‐Column‐Separation ModelsJournal of Hydraulic Engineering, 1994
- Fluid-Structure Interaction With Cavitation in Transient Pipe FlowsJournal of Fluids Engineering, 1992
- Large Water‐Hammer Pressures for Column Separation in PipelinesJournal of Hydraulic Engineering, 1991
- Simulation of Vaporous and Gaseous CavitationJournal of Fluids Engineering, 1984
- Transient Cavitating Pipe FlowJournal of Hydraulic Engineering, 1983
- On the dynamics of cavity clustersJournal of Physics D: Applied Physics, 1982
- Transient cavitation effects in fluid piping systemsNuclear Engineering and Design, 1978
- Experimental and Analytic Data Correlation Study of Water Column SeparationJournal of Fluids Engineering, 1973
- Water Hammer AnalysisJournal of the Hydraulics Division, 1969
- Water-Hammer Damage to Oigawa Power StationJournal of Engineering for Power, 1960