Experimental Investigation of Cavitation in a Centrifugal Pump with Double-Arc Synthetic Blade Design Method

Kyparissis, Spyridon D.; Margaris, Dionissios P.
July 2011
International Review of Mechanical Engineering;Jul2011, Vol. 5 Issue 5, p884
Academic Journal
Cavitation, in many cases, is an undesirable occurrence. In hydrodynamic devices such as propellers and pumps, cavitation causes a great deal of noise, damage to components, vibrations and a loss of efficiency. In the present study, a centrifugal pump with double-arc synthetic blade design method is examined experimentally in a pump test rig under cavitating and non-cavitating conditions. The pump test rig, where the experiments are carried out, allows optical observation of the cavitation inception and development with the aid of the stroboscopic light source. Studying the non-cavitating condition, the total performance head curves are illustrated for three different rotational speeds. On the other hand, examining the cavitating condition, the head drop curves are presented in order to investigate the cavitation inception. In addition, the vapour distribution along with the blades at the leading edge in the region of the suction side is depicted for the tested range of flow rates and rotational speeds.


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