Effects of Different Fluids Properties on Cavitation Performance in Centrifugal Pump

Cavitation, which is the formation and collapse of vaporous cavities in flowing liquids, can degrade the performance of pumps and other hydraulic equipment. The aims of the present research are to investigate the effect of different fluids properties on pump cavitation performance. Consideration is given to examine the effect of liquid viscosity and density on cavitation behavior. Experimental results are presented for a centrifugal pump operating in water, kerosene and diesel fuel with different disposal rates of flow. With references to the results, the water has affected by the cavitation at less Net Positive Suction Head (NPSH) than other liquids, also it can be conducted that the kerosene shares the closest cavitation behavior with diesel fuel. Therefore, the stress produced by cavitation bubbles decreases with increase of viscosity of the liquid.