以气-液两相流动的均相流模型为前提,运用流体力学计算软件对SMV静态混合器中的气液两相流的压力场进行模拟计算,分析其压降的规律,并与水平直圆管内压降和混合器内单液相流压降做了对比分析.结果表明:气液两相流流经SMV混合器的沿程压降及局部压降均随着雷诺数的增大呈现明显增大趋势,且管路总压降与元件数成正比;静态混合器两相流压降远远大于水平直圆管压降,当雷诺数在800～40 000间变化时,前者是后者的5到80倍;气含率低于5%时两相流摩擦压降倍率随着雷诺数的增大呈现微弱的增大趋势.%Based on the uniform model of two-phase flow, the pressure field of gas-liquid flow in SMV mixer was simulated by professional CFD software and was compared with that of single phase in SMV and that in tube .The results show that the pressure drop along the tube and local pressure drop of two-phase flows in SMV static mixer increase significantly with increasing of Reynolds number, and the total pressure drop is proportional to the number of mix-components; two-phase pressure drop in static mixer is larger than that in the horizontal circular straight tube, when Reynolds number changes in the range of 800 to 40 000, the former is 5-80 times as big as the latter. And the pressure drop ratio of two-phase flow increases slightly as Reynolds Dumber increases when the gas holdup is below 5%.
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