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本文利用悬浮体固液两相流颗粒群模型的理论研究成果，对在含沙水流中工作的水力机械转轮内部的固液两相流进行了数值模拟研究。首先针对水力机械转轮内部的悬浮体固液两相流的流动特性，通过探讨固液两相间的作用力本构关系式，简化了颗粒群模型中复杂的理论方程，建立了能进行数值模拟的欧拉方程。然后提出了一种新的数值模拟方法，即：在贴体坐标系下采用有限体积法，利用单一网格拟人工压缩技术，解决欧拉方程中的压力－速度关联问题和压力波动问题，并从理论上分析论证了该技术的严密性和有效性。作者利用此技术分别对轴流式水轮机转轮内实际工况下单相流与固液两相流的欧拉方程进行了数值模拟，在计算过程中，该技术能保证数值快速收敛和结果合理。最后对两相流流场的模拟结果进行的分析表明本文提出的数值模拟方法和拟人工压缩技术是成功的
In this paper, the solid-liquid two-phase flow particle swarm optimization model is used to simulate the solid-liquid two-phase flow inside a hydromechanical runner operating in a sandy water flow. First of all, in view of the flow characteristics of the solid-liquid two-phase flow in the rotor of a hydromechanical wheel, the complicated theoretical equation in the particle swarm model is simplified by discussing the constitutive relation of the force between the solid and liquid phases, and the numerical simulation Euler equations. Then, a new numerical simulation method is proposed, which is to solve the pressure-velocity-related problems and pressure fluctuation problems in the Euler equations by using the finite volume method in the body-fitted coordinate system and using a single grid artificial compression technique From the theoretical analysis to demonstrate the rigor and effectiveness of the technology. Using this technique, the authors numerically simulate the Euler equations of single-phase flow and solid-liquid two-phase flow in the runner of an axial-flow turbine, respectively. During the calculation process, the technique can ensure rapid numerical convergence and reasonable results . Finally, the simulation results of two-phase flow field show that the proposed numerical simulation method and artificial compression technique are successful