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Computational Study on Interactions of Vortices of a Square Cylinder and a Rectangular Vortex Generator Near a Plane
【2012.12.7 2:30pm,Z311】

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 2012-12-06  

  Colloquia & Seminars 

  Speaker

  Dr. Dilip K Maiti,Department of Mathematics, Birla Institute of Technology & Science, India

  Title

  Computational Study on Interactions of Vortices of a Square Cylinder and a Rectangular Vortex Generator Near a Plane

  Time

  2012.12.7 2:30pm

  Venue

  Z311

  Abstract

       We report a study on the shear flow past a square cylinder near a plane wall in presence of a family of eddy-promoting upstream rectangular cylinders in an in-line tandem arrangement to gain a better insight into dependency of the aerodynamic characteristics of both the cylinders on operational dimensionless parameters. The governing equations are solved through a pressure-correction-based iterative algorithm (SIMPLE) with the QUICK scheme for convective terms. Due to the differences in the basic shedding frequencies between a square (downstream) cylinder and a rectangular cylinder (promoter), the major issue of multiple peaks in the spectrum of the fluctuating lift coefficient of the downstream cylinder is addressed and justified with the observed flow patterns. A special attention is paid to search a suitable size of the promoter to produce stronger vortices from the downstream square cylinder in the wake.

  Affiliation

    

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