应用大涡模拟对水平管道进行流场分析  

Large Eddy Simulation for Flow Field of Horizontal Pipe

作　　者：余熙[1] 刘梅[1] 卫宏远[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《天津大学学报》2007年第3期342-345,共4页Journal of Tianjin University(Science and Technology)

摘　　要：为了准确描述湍流三维非稳态随机波动这一高度非线性的特性,简述湍流物理现象的特点,引出基于不同角度建模的湍流模型,在理论上对大涡模拟进行分析,并运用并行计算机、FLUENT6．2软件作为计算平台,针对水平管道中两股不同入射速率的流股相互作用下的流场进行大涡模拟数值分析,并与标准模型进行比较．To describe the characteristic of turbulence as 3D transient phenomenon with random fluctuations which is highly nonlinear, turbulence modeling ranging from approximate to highly rigorous was proposed. Moreover, large eddy simulation （LES） theory model is briefly reviewed in this paper, and then a calculation case of LES for horizontal pipe to reveal flow field under the interaction between two different velocity streams was carried out by using parallel computer and computational fluid dynamics （CFD） code FLUENT6.2. The result of LES was compared with standard k-ε model.

关 键 词：大涡模拟 并行计算 随机波动 水平管道 

分 类 号：TQ021.1[化学工程]