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Novel fully Implicit Collocated grid incompressible flow solver on unstructured meshes

Unnupatt, Jobin Joseph and Munikrishna, N and Balakrishnan, N (2017) Novel fully Implicit Collocated grid incompressible flow solver on unstructured meshes. In: 15th Asian Congress of Fluid Mechanics (15ACFM), NOV 21-23, 2016, Kuching, MALAYSIA.

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Official URL: http://dx.doi.org/10.1088/1742-6596/822/1/012035

Abstract

This article presents a novel implicit cell center finite volume scheme for solving two-dimensional incompressible steady state flows. A collocated approach has been employed considering its use in conjunction with unstructured meshes. The method inspired by the methodologies for compressible flow solvers is evolved to naturally accommodate several modules from such solvers. The explicit fluxes are computed to second order accuracy using the method of reconstruction. An inconsistent linearization is adopted for the implicit part which employs SGS sub-iterations. At the heart of the implicit procedure is obtaining an auxiliary velocity field, the divergence of which results in a Poisson equation for the pressure field, ensuring a divergence free velocity field resulting from the implicit iteration. The efficacy of the proposed method is demonstrated for several test problems, such as the flow past a Circular Cylinder, NACA 0012 airfoil and lid driven cavity.

Item Type: Conference Proceedings
Additional Information: Copy right for this article belongs to the IOP PUBLISHING LTD, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Depositing User: Id for Latest eprints
Date Deposited: 22 Jul 2017 06:35
Last Modified: 22 Jul 2017 06:35
URI: http://eprints.iisc.ac.in/id/eprint/57476

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