Transport Performance Improvement of a Multiphase Pump for Gas–Liquid Mixture Based on the Orthogonal Test Method

To improve the transport performance of a rotodynamic multiphase pump for gas–liquid mixture, we took head and efficiency index at rated flow rate with 15% inlet gas volume fraction as indices, used orthogonal test design method CFD technology to optimize. We selected blade shroud angles leading edge trailing edge, axial length impeller, well incidence angle number diffuser, total five factors were test. The weight function was determine final trial protocol. results showed that had greatest influence on indices. Under fraction, optimized increased by 2.81 m 5.6%, respectively, in comparison base pump. After optimization, partial fast-speed regions impeller passage low-pressure suction side disappeared, accumulation phase outlet suppressed, pumping using mixture improved greatly. This study provides an important theoretical basis optimization