A numerical study of turbulent square-duct flow using an anisotropic k-ɛ model
A numerical study of turbulent square-duct flow using an anisotropic k-ɛ model
复制标题
使用各向异性 k-ɛ 模型对湍流方管流进行数值研究
DOI：
10.1007/bf00271429
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发表时间：
1990
影响因子：
3.4
通讯作者：
S. Nisizima
中科院分区：
文献类型：
--
作者：
S. Nisizima
使用各向异性 k-ɛ 模型对湍流方管流进行数值研究，其中雷诺应力与其各向同性涡流粘度表示的偏差起着核心作用。借助壁阻尼函数在壁上施加无滑移边界条件。将方管流的各种计算的湍流量与实验和数值结果进行比较。比较表明，当前的各向异性 k-ɛ 模型对管流中的主要特性（例如湍流强度的各向异性和二次流）给出了合理的结果。
A turbulent square-duct flow is studied numerically using an anisotropic k-ɛ model, in which the deviation of the Reynolds stress from its isotropic eddy-viscosity representation plays a central role. The no slip boundary condition on the wall is imposed with the aid of wall damping functions. Various computed turbulent quantitites of a square-duct flow are compared with experimental and numerical results. The comparison shows that the present anisotropic k-ɛ model gives reasonable results to major characteristic properties in a duct flow such as the anisotropy of turbulent intensities and the secondary flow.