五级油气混输泵转速对动叶片气体分布的影响

The Influence of Five-stage Oil-gas Mixed Pump Rotating Speed on Moving Blade Gas Distribution

为了对油气混输泵内部流场进行数值模拟,建立了全流场三维模型,数值模拟计算时采用Mixture模型,湍流计算模型选用标准k-ε湍流模型,压力-速度耦合计算采用Simple算法。通过对流量、转速、含气率这三个性能参数的改变,探讨不同转速下,动叶的速度、压力、相态分布。结果表明:随转速的增加,叶片背面的低压区会扩大,气体在叶片中部的聚集越明显。

In order to simulate the flow field of the oil and gas multiphase pump,we establish a full three-dimensional model of the flow field.When numerical simulation calculations use a Mixture model,turbulence computing model selection standard k-εturbulence model,pressure-speed coupling calculation adopts Simple algorithm.From changing the flow rate,rotational speed,gas rates in these three performance parameters.We try to explore the rotor blades’velocity,pressure,phase distribution in different rotational speeds.The results show that with the rotational speed increasing,low pressure area on the back of leaves will be expanded,gas gathering more obvious in the middle of the leaves.