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Investigation of flow around a confined elliptical cylinder using the Lattice Boltzmann method

Taeibi Rahni, M ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.5829/idosi.mejsr.2013.15.1.2628
  3. Publisher: 2013
  4. Abstract:
  5. This paper deals with the investigation of the laminar flow past an elliptical cylinder confined in a channel. In this paper, the Lattice Boltzmann (LB) method is used to simulate flow in two dimensions. The present LB method with the used boundary conditions is validated in simulations of the incompressible flow past a circular cylinder. The simulations are carried out in a range of condition, 0≤θ≤90 (angle of incidence), 5≤Re≤100, (Reynolds number) for AR=0.25,0.5 (aspect ratio). The effects of those parameters on the drag and lift coefficients and other flow characteristics of the cylinder are examined in detail. The results demonstrate that the drag and lift coefficients increase with the increase of θ. It is seen that vortex shedding is not occurred at high Reynolds numbers at θ=0
  6. Keywords:
  7. Drag and lift coefficients ; Elliptical cylinder ; Laminar flow ; Lattice-boltzmann method ; Strouhal number
  8. Source: Middle East Journal of Scientific Research ; Volume 15, Issue 1 , 2013 , Pages 8-13 ; 19909233 (ISSN)
  9. URL: http://www.idosi.org/mejsr/mejsr15%281%2913/2.pdf