基于计算流体动力学(CFD)分析软件Fluent,针对含纳米颗粒固液二相冲击射流，提出了一个新的基于等效粘度的多相流模型，并在不同纳米颗粒浓度下与不考虑固液相间相互作用的离散相模型(DPM)和考虑固液相间相互作用的DPM 进行了对比，研究了三种模型对工作面的动压、径向速度和轴向速度、喷嘴的出口速度、轴线的动压和速度等参量的影响，给出了三种模型的适用范围。研究结果表明，当纳米颗粒体积分数不超过10%时，可以使用等效粘度模型代替不考虑固液相间相互作用的DPM 进行计算，最后给出了不同偏差率所适应的计算模型。

Based on Fluent which is a computational fluid dynamics (CFD) analysis software, a new hybrid multiphase flow model is proposed based on the equivalent viscosity for the solid- liquid two- phase containing nanoparticles impinging jet flow, and it is compared with the discrete phase model (DPM) considering interactions and no interaction. It demonstrates the comparative analysis of the calculations of three models under different solid concentrations, and meanwhile, illustrates the effects that three models have on, in terms of radial velocity, axial velocity and dynamic pressure of the work-plane, and outlet velocity of the nozzle as well as dynamic pressure and velocity of the axis, thus providing the scope of application of the three models. The research results show that when the volume fraction of nanoparticle is less than 10%, the model with equivalent viscosity, which replaces the DPM without the consideration of interaction, can be used for calculation. Finally appropriate computational model is proposed based on the scope of deviation rate.