Numerical analysis of flow around porous rectangular cylinders with uniform injection or suction
type: Item
instance of: scholarly article
title: Numerical analysis of flow around porous rectangular cylinders with uniform injection or suction
zbMATH Open document ID: 1391.76395
DOI: 10.1504/PCFD.2015.068794
author: Burhan Cuhadaroglu
author: Osman Turan
published in: Progress in Computational Fluid Dynamics
publication date: 2018-06-08T00:00:00Z
review text: Summary: The flow around rectangular cylinders of various aspect ratios of \(B/H = 2, 3\) and 4 with uniform injection or suction through the rear and top/bottom surfaces has been studied numerically at a Reynolds number \(\mathrm{Re} = 21,400\). The effects of injection or suction through the cylinder surfaces have been linked to the analysis via the wall functions of the viscous sub-layer and log-law layer. The injection or suction has been characterised by an injection coefficient \(C_Q = v_w/u_\infty\), which takes negative values for suction. The governing equations, which are a combination of the ensemble-averaged Navier-Stokes equations for incompressible flow in conjunction with the equations of a modified \(k-\varepsilon\) turbulence model, have been solved by the finite volume method. A non-uniform staggered grid arrangement has been used to economise on computing time. The results show that the vortex structure in the wake is influenced primarily by suction through the top and bottom surfaces of the rectangular cylinders. In addition, the parameters taken into account such as drag coefficient and Strouhal number are also affected by the injection coefficient as well as the injection/suction surfaces of the rectangular cylinders.
Mathematics Subject Classification ID: 76M12
Mathematics Subject Classification ID: 76D05
Mathematics Subject Classification ID: 76B47
zbMATH DE Number: 6882419
zbMATH Keywords: drag
zbMATH Keywords: vortex shedding
zbMATH Keywords: non-uniform staggered grid arrangement
MaRDI profile type: Publication
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description: scientific article; zbMATH DE number 6882419