UNSPECIFIED (2002) Novel multigrid orientated solution adaptive time-step approaches. In: ICFD Conference on Numerical Methods for Fluid Dynamics, UNIV OXFORD, OXFORD, ENGLAND, MAR 26-29, 2001. Published in: INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, 40 (3-4). pp. 507-519.

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Abstract

New performance-improving natural compatabilities between multigrid convergence acceleration and adapted time-step solution procedures are discussed. Echoing the multigrid-coarsened space-steps and interpolations, a novel adaptive temporal 'subcycling' strategy is presented. Tests show, saving storage by basing time-steps on a focused relatively high unsteadiness region, a focused range of variables or multigrid restricted/injected variables can be effective. A novel strategy of advancing comparative solution elements on coarser multigrid levels is found to give time savings. Higher frequency spatial components are accounted for on coarse levels through the multigrid forcing function. Copyright (C) 2002 John Wiley Sons, Ltd.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software Q Science > QA Mathematics T Technology > TJ Mechanical engineering and machinery Q Science > QC Physics
Journal or Publication Title:	INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
Publisher:	JOHN WILEY & SONS LTD
ISSN:	0271-2091
Date:	30 September 2002
Volume:	40
Number:	3-4
Number of Pages:	13
Page Range:	pp. 507-519
Identification Number:	10.1002/fld.308
Publication Status:	Published
Title of Event:	ICFD Conference on Numerical Methods for Fluid Dynamics
Location of Event:	UNIV OXFORD, OXFORD, ENGLAND
Date(s) of Event:	MAR 26-29, 2001
URI:	http://wrap.warwick.ac.uk/id/eprint/10534

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