Numerical simulation of flow through circular array of cylinders using porous media approach with non-constant local inertial resistance coefficient

Aquatic vegetation zone is now receiving an increasing attention as an effective way to protect the shorelines and riverbeds. To simulate the flow through the vegetation zone, the vegetation elements are often simplified as equidistant rigid cylinders, and in the whole zone, the porous media approac...

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Bibliographic Details
Published inJournal of hydrodynamics. Series B Vol. 29; no. 1; pp. 168 - 171
Main Author 詹杰民 胡文清 蔡文豪 龚也君 李志伟
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.02.2017
Springer Singapore
Subjects
cylinder array
Engineering
Engineering Fluid Dynamics
Hydrology/Water Resources
inertial resistance coefficient
Letter
Numerical and Computational Physics
porous media
Simulation
Vegetation zone
不均匀分布
圆形阵列
圆柱绕流
多孔介质
惯性系数
数值模拟
阻力系数
非定常
inertial resistance coefficient
Vegetation zone
porous media
cylinder array
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Summary:Aquatic vegetation zone is now receiving an increasing attention as an effective way to protect the shorelines and riverbeds. To simulate the flow through the vegetation zone, the vegetation elements are often simplified as equidistant rigid cylinders, and in the whole zone, the porous media approach can be applied. In this study, a non-constant inertial resistance coefficient is introduced to model the unevenly distribution of the drag forces on the cylinders, and an improved porous media approach is applied to one circular array of cylinders positioned in a 2-D flume. The calculated velocity profile is consistent with the experimental data.
Bibliography:31-1563/T
Aquatic vegetation zone is now receiving an increasing attention as an effective way to protect the shorelines and riverbeds. To simulate the flow through the vegetation zone, the vegetation elements are often simplified as equidistant rigid cylinders, and in the whole zone, the porous media approach can be applied. In this study, a non-constant inertial resistance coefficient is introduced to model the unevenly distribution of the drag forces on the cylinders, and an improved porous media approach is applied to one circular array of cylinders positioned in a 2-D flume. The calculated velocity profile is consistent with the experimental data.
Vegetation zone, cylinder array, porous media, inertial resistance coefficient
ISSN:1001-6058
1878-0342
DOI:10.1016/S1001-6058(16)60728-X