A Study of Cavitation in Pumps and Flow Systems

Abstract

Cavitation is the appearance of vapor cavities inside an initially homogeneous liquid medium, occurs in very different situations. According to the flow configuration and the physical properties of the liquid, cavitation is the most commonly required one in all the researches on the pumps and flow systems but they are too hard to manipulate with the primary methods. In this research was study the effects of rotational speed (rpm); flow rate (Q); fluid temperature (T) and pressure (P) on cavitation in pumps and flow system, to improve the pumps efficiency, and to choose a suitable method circuits and software programming. This research includes mechanism of cavitation formation, cavitation Reduction Techniques and ANSYS FLUENT Software. It was determined that a change in rotational speed, fluid flow rate and temperature are caused by changes in cavitation and find out that the cavitation in pumps increase with the rise of rotational speed and increase with increase in fluid flow rate and increase when the fluid flow rate is being so less and decrease with temperature rising and decrease with increase in exit pressure.