【摘要】 为改善阀门的特性，提高管道的输送效率，采用数值模拟的方法分析V型球阀的特性在气固两相流情况下随颗粒体积分数的变化。结果表明：随着颗粒体积分数的增大，V型球阀的流量系数减小，流阻系数增大，管道和阀门内的压力增大；在不同阀门开度下，颗粒体积分数发生变化对流体速度的影响均不明显。更多还原

【Abstract】 In order to improve the valve characteristics and pipeline transportation efficiency, numerical simulation is used to analyze the performance of V-type ball valve in gas-solid two-phase flow with different particle concentrations. The results show that when the particle concentration increases, the flow coefficient of V-type ball valve decreases, the flow resistance coefficientgradually increases, and the pressure inside the pipeline and the valve increases; under different relative valve openings, the change of particle concentration has no obvious effect on the fluid velocity.更多还原