| 渗透性对多孔介质内圆柱阵列绕流特性的影响 | |
| 陈洪 ; 朱克勤 ; CHEN Hong ; ZHU Keqin | |
| 2010-06-08 ; 2010-06-08 | |
| 关键词 | 多孔介质 Brinkman方程 圆柱阵列 数值模拟 porous medium Brinkman equation column array numerical simulation O357 |
| 其他题名 | INFLUENCE OF CYLINDER'S PERMEABILITY ON FLOW AROUND COLUMN ARRAY FILLED WITH POROUS MEDIUM |
| 中文摘要 | 针对多孔介质网状纤维的渗流和生物体内组织液流动等问题,研究多孔介质中圆柱方形阵列的低Re流动,以及流动所导致的圆柱表面的剪切应力.鉴于迄今为止的研究均限于圆柱实体模型的情况,重点分析将圆柱实体模型推广到可渗透时所导致的流动特性和表面剪切应力的变化.可渗透圆柱及圆柱阵列之间的间隙物使用具有不同渗透率的多孔介质模型,基于Brinkman方程,配以适当的边界条件,采用有限体积法进行数值求解.计算结果表明,圆柱的渗透特性改变了流场的流动特性,显著减小了流动在圆柱表面所产生的剪切应力,改变了阵列的渗透性.; Shear stress on the surface of columns and the low Re flow field of interstitial flow in column array is studied numerically in this paper,with focuses on the difference of shear stress on the column surface between solid body and permeable body.The porous models are used to simulate the region between the columns,and the structure of columns.Shear stress is calculated based on Brinkman equation using the finite volume method with proper boundary conditions.The numerical results show that the penetration structure of columns can inflect the flow field and significantly reduce the shear stress and effective permeability. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/50824]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 陈洪,朱克勤,CHEN Hong,等. 渗透性对多孔介质内圆柱阵列绕流特性的影响[J],2010, 2010. |
| APA | 陈洪,朱克勤,CHEN Hong,&ZHU Keqin.(2010).渗透性对多孔介质内圆柱阵列绕流特性的影响.. |
| MLA | 陈洪,et al."渗透性对多孔介质内圆柱阵列绕流特性的影响".(2010). |
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