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详细阐述了颗粒拟温度方程,计算了不同型线的叶轮及改变幂律流体物性参数对湍流流动的影响。计算结果表明,叶轮吸力面上的颗粒拟温度小于压力面上的,而且靠近壁面处的大于叶道中的。颗粒拟温度可探讨性地成为叶片磨损程度的衡量指标之一。从减轻叶片磨损角度来讲,双圆弧型线比单圆弧的好,叶片出口角小的比出口角大的好。这对改进适应两相流的叶轮设计,具有重要的指导意义和应用价值。
The quasi-temperature equations of particles are expounded in detail. The influence of different profile impellers and changing the physical parameters of the power-law fluid on turbulent flow is calculated. The calculated results show that the simulated temperature of the particles on the impeller suction surface is smaller than that on the pressure surface and closer to the wall surface than in the flow path. The pseudo-temperature of particles can be explored as a measure of the degree of blade wear. From the perspective of reducing blade wear, the double arc line is better than the single arc, and the exit angle of the blade is smaller than the exit angle. This has important guiding significance and application value for improving the design of two-phase flow impeller.