Effect of some physical properties of hydraulic tubes upon shock wave pressure propagation velocity

The purpose of this paper is to examine the effect of some physical properties of hydraulic pipelines, in particular the relative thickness and elasticity, on the accuracy of determining the propagation velocity of pressure shock wave. Considering the two-direction state of stress, which occurs in pipeline walls, the improved formula for the propagation velocity of pressure wave was derived. In the final part of the paper suitableness of the derived formula for hydrodynamic and strength calculations was verified. The calculations concerned water hammer phenomena in pipelines manufactured of different constructional materials. It was assumed that strains did not exceed the elastic range.