Reduction in drag and vortex shedding frequency through porous sheath around a circular cylinder

被引:69
作者
Bhattacharyya, S. [1 ]
Singh, A. K. [1 ,2 ]
机构
[1] Indian Inst Technol, Dept Math, Kharagpur 721302, W Bengal, India
[2] UFZ Helmholtz Ctr Environm Res, D-04318 Leipzig, Germany
关键词
fluid-porous interface; vortex shedding; passive control; pressure correction; upwind difference; HEAT-TRANSFER; FLOW-CONTROL; NATURAL-CONVECTION; PERMEABLE WALL; BOUNDARY-LAYER; SPLITTER PLATE; BLUFF-BODIES; MEDIA; WAKE; SUBSTRATE;
D O I
10.1002/fld.2210
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
A numerical study on the laminar vortex shedding and wake flow due to a porous-wrapped solid circular cylinder has been made in this paper. The cylinder is horizontally placed, and is subjected to a uniform cross flow. The aim is to control the vortex shedding and drag force through a thin porous wrapper around a solid cylinder. The flow field is investigated for a wide range of Reynolds number in the laminar regime. The flow in the porous zone is governed by the Darcy-Brinkman-Forchheimer extended model and the Navier-Stokes equations in the fluid region. A control volume approach is adopted for computation of the governing equations along with a second-order upwind scheme, which is used to discretize the convective terms inside the fluid region. The inclusion of a thin porous wrapper produces a significant reduction in drag and damps the oscillation compared with a solid cylinder. Dependence of Strouhal number and drag coefficient on porous layer thickness at different Reynolds number is analyzed. The dependence of Strouhal number and drag on the permeability of the medium is also examined. Copyright (C) 2009 John Wiley & Sons, Ltd.
引用
收藏
页码:683 / 698
页数:16
相关论文
共 33 条
[1]  
[Anonymous], 1962, Matrix Iterative Analysis
[2]  
Baranyi L., 2003, J. Comput. Appl. Mech, V4, P13
[3]   BOUNDARY CONDITIONS AT A NATURALLY PERMEABLE WALL [J].
BEAVERS, GS ;
JOSEPH, DD .
JOURNAL OF FLUID MECHANICS, 1967, 30 :197-&
[4]   Fluid motion around and through a porous cylinder [J].
Bhattacharyya, S. ;
Dhinakaran, S. ;
Khalili, A. .
CHEMICAL ENGINEERING SCIENCE, 2006, 61 (13) :4451-4461
[5]   NUMERICAL STUDY AND PHYSICAL ANALYSIS OF THE PRESSURE AND VELOCITY-FIELDS IN THE NEAR WAKE OF A CIRCULAR-CYLINDER [J].
BRAZA, M ;
CHASSAING, P ;
MINH, HH .
JOURNAL OF FLUID MECHANICS, 1986, 165 :79-130
[6]   The laminar boundary layer over a permeable wall [J].
Breugem, W ;
Boersma, BJ ;
Uittenbogaard, RE .
TRANSPORT IN POROUS MEDIA, 2005, 59 (03) :267-300
[7]   Passive control of the flow around a square cylinder using porous media [J].
Bruneau, CH ;
Mortazavi, L .
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, 2004, 46 (04) :415-433
[8]   Numerical modelling and passive flow control using porous media [J].
Bruneau, Charles-Henri ;
Mortazavi, Iraj .
COMPUTERS & FLUIDS, 2008, 37 (05) :488-498
[9]  
Bruneau CH, 2006, INT J OFFSHORE POLAR, V16, P90
[10]   Passive control around the two-dimensional square back ahmed body using porous devices [J].
Bruneau, Charles-Henri ;
Mortazavi, Iraj ;
Gillieron, Patrick .
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 2008, 130 (06)