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Numerical simulation of flow over a square cylinder with upstream and downstream circular bar using lattice Boltzmann method

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  • Yuan Ma

    (Shanghai Automotive Wind Tunnel Center, Tongji University, No. 4800, Cao’an Road, Shanghai 201804, P. R. China†Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems, No. 4800, Cao’an Road, Shanghai 201804, P. R. China)

  • Rasul Mohebbi

    (#x2021;School of Engineering, Damghan University, P. O. Box 3671641167, Damghan, Iran)

  • M. M. Rashidi

    (#xA7;Department of Civil Engineering, School of Engineering, University of Birmingham, Birmingham, UK)

  • Zhigang Yang

    (Shanghai Automotive Wind Tunnel Center, Tongji University, No. 4800, Cao’an Road, Shanghai 201804, P. R. China†Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems, No. 4800, Cao’an Road, Shanghai 201804, P. R. China)

Abstract

A numerical investigation is carried out to analyze the flow patterns, drag and lift coefficients, and vortex shedding around a square cylinder using a control circular bar upstream and downstream. Lattice Boltzmann method (LBM) was used to investigate flow over a square cylinder controlled by upstream and downstream circular bar, which is the main novelty of this study. Compared with those available results in the literature, the code for flow over a single square cylinder proves valid. The Reynolds number (Re) based on the width of the square cylinder (D) and diameter of circular bar (d) are 100 for square cylinder, 30 and 50 for different circular bars. Numerical simulations are performed in the ranges of 1≤L∕D≤5 and 1≤G∕D≤5, where L and G are the center-to-center distances between the bar and cylinder. Five distinct flow patterns are observed in the present study. It is found that the maximum percentage reduction in drag coefficient is 59.86% by upstream control bar, and the maximum percentage reduction in r.m.s. lift coefficient is 73.69% by downstream control bar. By varying the distance ratio for the downstream control bar, a critical value of distance ratio is found where there are two domain frequencies.

Suggested Citation

  • 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.
  • Handle: RePEc:wsi:ijmpcx:v:29:y:2018:i:04:n:s0129183118500304
    DOI: 10.1142/S0129183118500304
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    Citations

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    Cited by:

    1. Mohebbi, Rasul & Delouei, Amin Amiri & Jamali, Amin & Izadi, Mohsen & Mohamad, Abdulmajeed A., 2019. "Pore-scale simulation of non-Newtonian power-law fluid flow and forced convection in partially porous media: Thermal lattice Boltzmann method," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 525(C), pages 642-656.
    2. 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.
    3. Ma, Yuan & Mohebbi, Rasul & Rashidi, M.M. & Yang, Zhigang & Sheremet, Mikhail, 2020. "Nanoliquid thermal convection in I-shaped multiple-pipe heat exchanger under magnetic field influence," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 550(C).
    4. Ma, Yuan & Rashidi, M.M. & Mohebbi, Rasul & Yang, Zhigang, 2020. "Nanofluid natural convection in a corrugated solar power plant using the hybrid LBM-TVD method," Energy, Elsevier, vol. 199(C).
    5. Neelam Tahir & Waqas Sarwar Abbasi & Hamid Rahman & Mubarak Alrashoud & Ahmed Ghoneim & Abdulhameed Alelaiwi, 2023. "Rectangular Cylinder Orientation and Aspect Ratio Impact on the Onset of Vortex Shedding," Mathematics, MDPI, vol. 11(22), pages 1-22, November.

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