Effect of blade perforation on performance and internal flow field of electric submersible pump under gas-liquid two-phase conditions
In order to study the internal flow mechanism of the electric submersible pump,so as to im-prove the gas-liquid mixing performance of the electric submersible pump under high gas content con-ditions,numerical simulation based on the Eulerian-Eulerian non-homogeneous flow model was carried out to analyze the gas-liquid two-phase flow characteristics before and after the blade perforation.The effect of blade perforation on the performance and internal flow field of the electric submersible pump under the conditions of gas-liquid two-phase flow was investigated.The results show that in pure water environment,the blade perforation reduces the performance of the electric submersible pump under low gas content and small flow rate condition.However,the blade perforation can improve the gas-liquid mixing performance of the electric submersible pump under large flow rate.Blade perforation changes the pressure distribution inside the impeller,so that the average pressure inside the impeller of the electric submersible pump rises,thus improving the flow pattern inside the impeller.Blade perforation also disperses the gas-phase aggregation and makes the gas distribution more uniform.As a result,the distribution of vortex core in the impeller channel is significantly reduced,which reduces the energy dissipation.This study provides a theoretical basis for the subsequent improvement of the gas-liquid mixing performance of the electric submersible pump.
electric submersible pumpblade perforationgas-liquid two-phase flownumerical simulationvortex core distribution
万方数据
维普
