Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/9896
Title: A comparative study of immersed-boundary interpolation methods for a flow around a stationary cylinder at low Reynolds number
Authors: Madani, SH
Wissink, J
Bahai, H
Keywords: Immersed-boundary;Interpolation methods;Reconstructive method;Stationary cylinder;Vortex shedding
Issue Date: 2013
Publisher: International Center for Numerical Methods in Engineering
Citation: Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013, 2013, pp. 585 - 596
Abstract: The accuracy and computational efficiency of various interpolation methods for the implementation of non grid-confirming boundaries is assessed. The aim of the research is to select an interpolation method that is both efficient and sufficiently accurate to be used in the simulation of vortex induced vibration of the flow around a deformable cylinder. Results are presented of an immersed boundary implementation in which the velocities near nonconfirming boundaries were interpolated in the normal direction to the walls. The flow field is solved on a Cartesian grid using a finite volume method with a staggered variable arrangement. The Strouhal number and Drag coefficient for various cases are reported. The results show a good agreement with the literature. Also, the drag coefficient and Strouhal number results for five different interpolation methods were compared it was shown that for a stationary cylinder at low Reynolds number, the interpolation method could affect the drag coefficient by a maximum 2% and the Strouhal number by maximum of 3%. In addition, the bi-liner interpolation method took about 2% more computational time per vortex shedding cycle in companion to the other methods.
URI: http://bura.brunel.ac.uk/handle/2438/9896
ISBN: 9788494140761
Appears in Collections:Dept of Design Research Papers

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