多相稀薄流动中的颗粒相变研究

摘要

Based on the non-equilibrium crystal dynamics principle,a particle phase transition model was constructed under the assumption of ignoring crystallized intermediate phase state.The effect of phase transition model on gas and particle phase parameter distribution was studied,and the specific role of phase transition model on different particle size was analyzed,and particle phase characteristics of the flow field under different thermal adaptation coefficient(Tac)was described.A comparison with the results from references shows that the collision-polymerization-splitting model is correct.%根据非平衡结晶动力学原理，在忽略结晶中间相态这一假设条件下，构建了颗粒相的相变模型。研究了相变模型对流场气相及颗粒相参数分布的影响，分析了相变模型对不同粒径颗粒的具体作用，并对流场在不同热适应系数下颗粒相的特性进行了描述和分析。通过与文献结果对比，验证了所提出的碰撞-聚合-分裂模型的正确性。