Rosam, J., Jimack, P.K. and Mullis, A. (2007) A fully implicit, fully adaptive time and space discretisation method for phase-field simulation of binary alloy solidification. Journal of Computational Physics, 225 (2). pp. 1271-1287. ISSN 0021-9991
Available under licence : See the attached licence file.
A fully-implicit numerical method based upon adaptively refined meshes for the simulation of binary alloy solidification in 2D is presented. In addition we combine a second-order fully-implicit time discretisation scheme with variable steps size control to obtain an adaptive time and space discretisation method. The superiority of this method, compared to widely used fully-explicit methods, with respect to CPU time and accuracy, is shown. Due to the high non-linearity of the governing equations a robust and fast solver for systems of nonlinear algebraic equations is needed to solve the intermediate approximations per time step. We use a nonlinear multigrid solver which shows almost h-independent convergence behaviour.
|Copyright, Publisher and Additional Information:||Copyright © 2007 Elsevier Inc. This is an author produced version of a paper subsequently published in 'Journal of Computational Physics'. Uploaded in accordance with the publisher's self-archiving policy.|
|Keywords:||phase-field simulation, binary alloys, mesh adaptivity, fully-implicit method, nonlinear multigrid, variable time step control|
|Institution:||The University of Leeds|
|Academic Units:||The University of Leeds > Faculty of Engineering (Leeds) > School of Computing (Leeds)
The University of Leeds > Faculty of Engineering (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Materials Research (Leeds)
|Depositing User:||Miss Jamie Grant|
|Date Deposited:||10 Mar 2009 10:43|
|Last Modified:||17 Jun 2014 04:04|