冰盖下冰花颗粒的随机运动模拟  

Simulation of random movement of ice particles under ice cover

作　　者：王军[1] 倪晋[1] 张潮[1] 

机构地区：[1]合肥工业大学土木建筑工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2008年第2期191-195,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(10372028)

摘　　要：冰塞成灾是寒冷地区河流上存在的共性问题,冰塞的形成与演变可粗略划分为封河、水内冰冰塞和开河等3个阶段。基于固液两相流理论,尝试研究水内冰冰花颗粒的运动轨迹和初始冰塞头部的推进过程,冰粒浮速的模拟计算结果与现有经验公式计算结果定性一致,冰粒运动轨迹和初始冰塞头部的推进过程与实验室中观察现象类似。Disasters associated with ice jam occur frequently in rivers in cold region. The formation and evolution of ice jam can be roughly classified into three stages： ice cover formation, freeze up, and breakup. Based on solid-liquid two-phase flow theory, this paper studies the movement locus of ice frazil and the advance of the edge of initial ice jam. The simulated average rising velocity of ice particles matched those obtained from existing empirical formulas, and the modeled locus of ice frazil and the advance of the edge of initial ice jam were consistent with those revealed by the laboratory experimerits.

关 键 词：固液两相流 数值模拟 随机轨道模型 初始冰塞 

分 类 号：TV133[水利工程—水力学及河流动力学]