Progress in Analytical Modeling of Water Hammer

Modeling of Fluid Interaction Produced by Water Hammer

This paper compares the computational performance of two numerical methods for two models of Transient Flow. One model was defined by method of the Eulerian based expressed in a method of characteristics “MOC”, finite difference form. The other model was defined by method of Regression. Each method was encoded into an existing hydraulic simulation model. Results indicated that the accuracy of t...

Water Hammer with Column Separation:

Column separation refers to the breaking of liquid columns in fully filled pipelines. This may occur in a water hammer event when the pressure drops to the vapor pressure at specific locations such as closed ends, high points or knees (changes in pipe slope). A vapor cavity, driven by the inertia of the parting liquid columns, will start to grow. The cavity acts as a vacuum, a low-pressure poin...

Water hammer dissipation in pneumatic slug tests

Multiple Scales Analysis of Water Hammer Attenuation

A multiple scales analysis is used to construct a uniformly accurate approximation to water hammer pressure wave attenuation that is initiated by a sudden valve opening. The method of analysis is well suited to the study of a water hammer that possesses several time scales and is applied to a mild generalization of the classical equations. It should prove useful for finding attenuation curves w...

Water Hammer in Offloading Systems: Contribution of Detailed Modeling to Design and Safety

This paper (SPE 134140) was accepted for presentation at the SPE Annual Technical Conference and Exhibition, Florence, Italy, 19–22 September 2010, and revised for publication. Original manuscript received 1 June 2010. Revised manuscript received 20 October 2010. Paper peer approved 8 November 2010. Summary The second-largest oil spillage in Norwegian petroleum history occurred on 12 December 2...