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Effect of Various Nozzle Profiles on Performance of a Two Phase Flow Jet Pump

Authors: Vishnu Prasad Sharma, S. Kumaraswamy, A. Mani


This paper reports on the results of experimental investigations on the performance of a jet pump operated under selected primary flows to optimize the related parameters. For this purpose a two-phase flow jet pump was used employing various profiles of nozzles as the primary device which was designed, fabricated and used along with the combination of mixing tube and diffuser. The profiles employed were circular, conical, and elliptical. The diameter of the nozzle used was 4 mm. The area ratio of the jet pump was 0.16. The test facility created for this purpose was an open loop continuous circulation system. Performance of the jet pump was obtained as iso-efficiency curves on characteristic curves drawn for various water flow rates. To perform the suction capability, evacuation test was conducted at best efficiency point for all the profiles.

Keywords: two phase flow, jet pump, performance test, Evacuation test, nozzle profile, nozzle spacing

Digital Object Identifier (DOI):

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