Influence of Lateral Boundaries and Grid Spacing on Steady Flow past a Square Cylinder

International Journal of Mechanical Engineering

© 2014 by SSRG - IJME Journal

Volume 1 Issue 8

Year of Publication : 2014

Authors : Nidhul K, Sunil A S, Kishore V

10.14445/23488360/IJME-V1I8P103

How to Cite?

Nidhul K, Sunil A S, Kishore V, "Influence of Lateral Boundaries and Grid Spacing on Steady Flow past a Square Cylinder," SSRG International Journal of Mechanical Engineering, vol. 1,  no. 8, pp. 9-12, 2014. Crossref, https://doi.org/10.14445/23488360/IJME-V1I8P103

Abstract:

In this paper, the influence distance of lateral boundaries of rectangular flow domain from the cylinder wall surface and grid spacing on flow past a square cylinder at low Reynolds number is numerically investigated using ANSYS Fluent. Two dimensional steady incompressible flow past a circular cylinder is solved numerically using finite volume method with second order accuracy in space. Pressure-velocity coupling scheme employed is SIMPLE. A domain independent study was conducted by varying the size of flow domain to ensure that the location of lateral boundaries does not influence the flow parameters. Then on the flow domain chosen, grid independence study is conducted so as to optimize computational hardware resource and time while ensuring that the results predicted are accurate and is not altered with the variation in the computational grid. The flow pattern and flow characteristics past a square cylinder at low Reynolds number were studied by means of vorticity magnitude contour, flow streamlines coefficient of drag and variation of x-component of velocity.

Keywords:

coefficient of drag, coefficient of pressure, incompressible flow, grid, Reynolds number, square cylinder.

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