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Controlling the hydrodynamic forces on a square cylinder in a channel via an upstream porous plate

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  • Hassanzadeh Saraei, Sina
  • Chamkha, Ali
  • Dadvand, Abdolrahman

Abstract

Drag and lift forces are very important in engineering applications and, therefore, many research projects have been conducted to control these forces. In this paper, the effects of an upstream porous plate on the hydrodynamic forces over a square cylinder are investigated using lattice Boltzmann method. The main idea is to separate the obstacle from the upstream flow by adding such a porous plate, since the magnitudes of the drag and lift forces have a direct relationship with the phenomena of vortices shedding from the obstacle. In order to have a better insight into the problem, streamlines, vorticity contours and lift and drag coefficients are presented for different case studies. Results proved that the porous plate can reduce the drag and lift coefficients. Furthermore, increasing the height and the gap spacing (i.e., the surface-to-surface distance between the porous plate and the obstacle) could significantly affect the flow field characteristics and the forces acting on the obstacle.

Suggested Citation

  • Hassanzadeh Saraei, Sina & Chamkha, Ali & Dadvand, Abdolrahman, 2021. "Controlling the hydrodynamic forces on a square cylinder in a channel via an upstream porous plate," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 185(C), pages 272-288.
    • Handle: RePEc:eee:matcom:v:185:y:2021:i:c:p:272-288
    DOI: 10.1016/j.matcom.2020.12.017
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    References listed on IDEAS

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    1. Yuan Ma & Rasul Mohebbi & M. M. Rashidi & Zhigang Yang, 2018. "Numerical simulation of flow over a square cylinder with upstream and downstream circular bar using lattice Boltzmann method," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 29(04), pages 1-28, April.
    2. Zhen-Hua Chai & Bao-Chang Shi & Lin Zheng, 2007. "Lattice Boltzmann Simulation Of Viscous Dissipation In Electro-Osmotic Flow In Microchannels," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 18(07), pages 1119-1131.
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