Research on the Pumping Performance of a Multi-stage Series Nozzle Liquid-gas Jet Pump Based on Fluent
In order to improve the pumping performance of the liquid-gas jet pump,it is proposed to install a multi-stage series nozzle behind the main nozzle of the liquid-gas jet pump.Numerical simulations of the gas-liquid two-phase fluid movement in the conventional liquid-gas jet pump and the multi-stage series nozzle liquid-gas jet pump were conducted using Fluent software.Under the same operating conditions,a comparative analysis was conducted on the pumping power,pressure field distribution,velocity field distribution,and gas phase volume distribution of two liquid-gas jet pumps.The results show that at the inlet pressure(gauge pressure)of the working fluid of 0.3 MPa,0.35 MPa and 0.4 MPa,the pumping performance of the multi-stage series nozzle liquid-gas jet pump has been improved by 18.1%,13.4%and 20%compared to the conventional liquid-gas jet pump respectively.The multi-level structure of the nozzle promotes pulse and momentum exchange between the gas-liquid phases.The research results have certain reference significance for the optimization design and improvement of suction performance of liquid-gas jet pumps.
liquid-gas jet pumpmulti-stage series nozzlepumping performancenumerical simulation
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