SOME RESEARCH RESULTS ON THE LAW OF PRESSURE INCREASE OF THE WAVES REFLECTED AT THE CLOSE VALVE WITHIN THE PIPE CONTAINING MIXTURE OF LIQUID WITH VAPOUR BUBBLES

Abstract

The liquid – vapour mixture is a mixture of liquid with vapour bubbles. This type of mixture is met in many natural and industrial processes. This paper presents the process of pressure increase of the waves reflected at the close valve of pipe (contain mixture of liquid - vapour) when the pressure wave propagates in the mixture of liquid with vapour bubbles and impacts on the valve. The numerical method is applied to calculate, study and analyze the influence of initial intensity of pressure and the volume fraction of vapour phase in the mixture on the pressure increase of the waves reflected at the valve. From the results achieved above, the law of the pressure increase of the waves reflected at the close valve is determined.