The aim of the paper is to experimentally measure and ealuate bulk modulus of oil/steel pipe system and oil/hose system.The measurement was performed Stash Jar using experimental device on the basis of a measured pressure difference depending on time.Bulk modulus is evaluated from pressure change with known flow and volume of line.Pressure rise is caused by valve closure at the line end.Furthermore, a mathematical model of the experimental device is created using Matlab SimHydraulics software.
Time dependencies of pressure for the Masalas oil/steel pipe system and the oil/hose system are simulated on this mathematical model.The simulations are verified by experiment.