Abstract
The paper presents the benefits of a preinducer on the performance of a high-speed centrifugal pump. The study is carried out by introducing a preinducer upstream of the main inducer of a centrifugal pump. The test methodology consists of non-cavitation and cavitation tests at design and off-design conditions. The tests are carried out with and without the preinducer to obtain a comparison of the effect of the preinducer. The study provides the design parameters of the preinducer, the details of the test rig, the test article configuration, and details of the test conducted to find out the performance of the preinducer. It also gives the effect of the preinducer on the noncavitating behavior, cavitation inception, and net positive suction head corresponding to the 3% head drop for the centrifugal pump.
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