基于格子Boltzmann方法的地下矿巷道系统热流态仿真  

Heat Flow Simulation of Underground Tunnel System Based on Lattice Boltzmann Method

作　　者：陆秋琴[1] 韦献刚[1] 黄光球[1] 

机构地区：[1]西安建筑科技大学管理学院,西安710055

出　　处：《系统仿真学报》2010年第2期326-332,共7页Journal of System Simulation

基　　金：教育部博士点基金(20070703009);陕西省自然科学基金(007E217);陕西省教育厅科研计划项目(09JK531)

摘　　要：提出了基于分块耦合的双分布格子Boltzmann方法(LBM)的地下巷道热流态仿真模型。在该模型中,分别建立了LBM速度和温度模型,并采用Boussinesq方程将其有机耦合;平直边界采用反弹格式处理,曲边界采用曲边界反弹格式处理;采用分块耦合算法将复杂巷道分成若干规则块,各块分别独立计算,在边界处交换数据,从而去除冗余网格,简化网格计算,提高系统资源利用效率。通过基于该模型开发出的仿真系统的运行表明,该仿真系统将时间、空间和系统各参数有机结合起来,在形象、直观的条件下观测到火灾发生时地下矿巷道系统热流的演变过程,获得巷道系统关于热流流动速度,温度,压力等方面的详细数据,为制定行之有效的热流规避方案提供科学依据。The heat flow model of an underground tunnel system based on dual-distributed Lattice Boltzmann Method （LBM） of separated-coupled algorithm was proposed. In the model, the LBM velocity and temperature models were constructed respectively, and then these models were coupled organically by Boussinesq equation; the bounce-back scheme on a straight boundary and the curved-boundary-bounce-back scheme on a curved boundary were adopted respectively,＂ a complicated tunnel in the underground tunnel system was divided into a certain number of regular blocks by using the separated-coupled algorithm, where each block was computed separately and respectively, and the data were exchanged only on boundaries, then redundant grids were removed greatly and grid computing was simplified heavily, so the system resource efficiency was improved. Through running the simulation system developed with the heat flow model, it shows that time, space and the parameters on the system are combined organically by the model, an evolution process of heat-flow in the underground tunnel system when a fire disaster happens can be observed visually, and the detailed data about heat flow velocity, temperature and pressure in the tunnel system can be obtained, then some effect heat flow evading measures can be easily and scientifically generated.

关 键 词：地下矿 热流态 双分布格子Boltzmann模型 分块耦合算法 边界处理 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]