摘要
本文以Kim JY的地铁活塞风实验台为物理模型,用Gambit软件建立了其全尺寸模型,并利用Fluent 6.3.16软件建立了相应的活塞风动网格模型,模拟了列车以某一运动规律经过隧道后,隧道内压力场和速度场的动态变化规律。将模拟结果与Kim JY的实验及模拟数据进行对比可知,在各测试位置上,本文所建模型压力系数模拟平均误差可控制在8.0%以内,速度系数平均误差可控制在11.7%以内,且模拟结果优于Kim JY模型,说明本文所建模型准确、合理,具有较强的通用性。
In this paper, the subway piston wind model was established with dynamic mesh method using the software Fluent 6.3. 16. In this model,the experiment facility with the scale of 1：20 presented in Kim JY＇s paper was taken as the physical model. With this model,the dynamic field distributions of the pressure and velocity were simulated when the train passed the tunnel with a certain kind of moving rules. Compared with the experimental and simulation data in Kim JY＇s paper, the simulation results of the presented model agreed well with the experimental data. The average errors of the pressure coefficient and velocity coefficient could be controlled within 8.0% and ll. 7% ,respectively. These results indicated that the presented model in this paper could accurately predict the pressure and velocity fields brought by the subway piston wind.
出处
《建筑科学》
北大核心
2011年第8期75-81,共7页
Building Science
基金
北京市教委科技计划项目(05004012200611)
中国博士后基金资助项目(98004016200701)
关键词
活塞风模型
动网格
地铁
piston wind model, dynamic mesh, subway
