中文摘要：

利用拉格朗日粒子随机追路模型以及El-Batsh和Haselbacher提出的粒子沉积模型，对飞灰颗粒横掠管束时的运动轨迹和沉积特性进行了数值研究，获得了管束排布方式以及腔子直径对飞灰颗粒运动轨迹及沉积分布的影响。结果表明：当颗粒的直径小到一定程度时，管束通道内的流场和温度分布对颗粒的运动轨迹影响显著；颗粒在管壁表面的碰撞率和沉积率与管束排布和粒径有关，粒径50．0μ颗粒几乎没m有沉积；粒径10．0μm颗粒沉积主要分布在管壁迎风面；粒径1．0μm的颗粒在管壁的迎风面和背风面部有沉积。

英文摘要：

The particulate transport and deposition of particle-laden flow crossing tube bundles were numerically calculated using the Lagrangian stochastic tracking model and the particle deposition model presented by E1-Batsh and Haselbacher. The results illust the part smaller icle size have important effects on particle trajectories and rate that th deposition. than a certain value, the particle trajectories are significantly affected e tube arrangements and When the particle size is by the flow field and the temperature distribution inside tube bundles. The collision rate and the deposition rate of particles on the tube surface are related to the tube bundle arrangement and particle size. Almost no deposition of particle diameter of 50 μm;deposition area of particle size of 10 μm are mainly distributed in windward side while particle size of 1 μm are distributed in all the windward and leeward side.