Influence of Spherical and Cylindrical Capsules on Pressure Transients in Hydraulic Pipelines

Abstract

<p>The influence of capsules on pressure transients in hydraulic pipelines has been reported in this dissertation. This experimental investigation was carried out for flow velocities of 1 to 4 ft/sec. for both cylindrical and spherical capsules. Shock waves were generated by a fast closing valve in a 1 in. diameter pipe and pressure transients were measured for a train of cylindrical capsules of diameter 0.875 in. and 0.95 in. The spherical capsules were of diameter 0.75 in. and 0.875 in.</p> <p>A theoretical analysis for this type of waterhammer problem using a perturbation technique has been obtained. The theoretical solution was found to be in agreement with the experimental observations for cylindrical capsules.</p>