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A h-Adaptive Algorithm Using Residual Error Estimates for Fluid Flows

Published online by Cambridge University Press:  03 June 2015

N. Ganesh*
Affiliation:
Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
N. Balakrishnan*
Affiliation:
Computational Aerodynamics Laboratory, Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560012, India
*
Corresponding author.Email:nbalak@aero.iisc.ernet.in
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Abstract

Algorithms for adaptive mesh refinement using a residual error estimator are proposed for fluid flow problems in a finite volume framework. The residual error estimator, referred to as the ℜ-parameter is used to derive refinement and coarsening criteria for the adaptive algorithms. An adaptive strategy based on the ℜ-parameter is proposed for continuous flows, while a hybrid adaptive algorithm employing a combination of error indicators and the ℜ-parameter is developed for discontinuous flows. Numerical experiments for inviscid and viscous flows on different grid topologies demonstrate the effectiveness of the proposed algorithms on arbitrary polygonal grids.

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Type
Research Article
Copyright
Copyright © Global Science Press Limited 2013

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