泥石流的增强碰撞算子格子Boltzmann模型  

The Lattice Boltzmann Model with Enhanced Collisions of Debris Flow

作　　者：王沁[1] 姚令侃[1] 何平[1] 

机构地区：[1]西南交通大学土木工程学院,成都610031

出　　处：《工程数学学报》2007年第4期618-624,共7页Chinese Journal of Engineering Mathematics

基　　金：国家自然科学基金(49831010)

摘　　要：利用增强碰撞算子格子的Boltzmann方法,分析泥石流作为非Newton体的特点,根据泥石流的Bingham体模型,构造了一个特殊的增强碰撞算子的格子Boltzmann模型,并由此成功地模拟了泥石流入汇主河的运动过程,为预测和防治泥石流入汇主河所造成的灾害提供了一些理论依据。Through making use of the lattice Boltzmann method with enhanced collisions, we analyze characteristic of debris flows as non-Newton fluid flows. Based on the Bingham model of the debris flow, a special two-dimensional lattice Boltzmann model with enhanced collisions is established, which simulates successfully the debris flow ingoing primary river and provide theoretic foundation for forecasting and prevention disaster due to the debris flow ingoing primary river.

关 键 词：格子BOLTZMANN方法 Navier-Stoke方程 Bingham体模型 泥石流 

分 类 号：O357[理学—流体力学] P642[理学—力学]