对突扩圆管中液固两相流冲刷腐蚀过程进行了数值模 拟研究.冲刷腐蚀过程的综合模型可以分解为液固两相流动模型、冲刷模型和腐蚀模型.在欧 拉 坐标系下求解流体相的雷诺时均守恒方程组来模拟流体流场，通过拉格朗日坐标系下的随机 轨道模型获得固体颗粒相的运动，并考虑了流体相与固体颗粒相之间的双向耦合作用.数据 验证结果表明构建的综合模型基本上是正确可行的.
Erosion-corrosion of liquid-solid two-phase flow occ urring in a 304＃ stainless steel pipe with suddenly expanded cross-section is numerically studied.A comprehansive model for erosion-corrosion proce ss includes three main components: the liquid-solid two-phase flow model, erosio n model and corrosion model. The Eulerian-Lagrangian approach is used to simulat e liquid-solid two-phase flow, that is, Reynolds time-averaging equations are so lved to simulate fluid phase, while stochastic trajectory model is adopted to ob tain properties of particle phase. Two-way coupling effect between the fluid pha se and the particle phase is considered in the paper. The feasibility of the mod els is examined by the data from references.The esults show that the model is ba sically correct and feasible.
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