Simulations of transient cavitating turbulent flow using unsteady frictional loss models

摘要

The paper presents two key mathematical models of transient cavitating pipe flow, i.e. column separation model (CSM) and bubbly cavitation model (BCM). Both models investigated in the paper take into account unsteady frictional loss models. The equations describing the CSM and BCM models have been solved using first the method of characteristics and then the finite differences method. The results of numerical simulations have been compared with the results obtained in the experiments. Transients which took into account unsteady wall shear stress fit well the results of experiments in comparison with quasi-steady wall shear stress model.