Show simple item record

contributor authorF. B. Lin
contributor authorF. Sotiropoulos
date accessioned2017-05-08T23:53:54Z
date available2017-05-08T23:53:54Z
date copyrightJune, 1997
date issued1997
identifier issn0098-2202
identifier otherJFEGA4-27118#331_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/118928
description abstractVarious approaches for constructing artificial dissipation terms for three-dimensional artificial compressibility algorithms are presented and evaluated. Two, second-order accurate, central-differencing schemes, with explicitly added scalar and matrix-valued fourth-difference artificial dissipation, respectively, and a third-order accurate flux-difference splitting upwind scheme are implemented in a multigrid time-stepping procedure and applied to calculate laminar flow through a strongly curved duct. Extensive grid-refinement studies are carried out to investigate the grid sensitivity of each discretization approach. The calculations indicate that even the finest mesh employed, consisting of over 700,000 grid nodes, is not sufficient to establish grid independent solutions. However, all three schemes appear to converge toward the same solution as the grid spacing approaches zero. The matrix-valued dissipation scheme introduces the least amount of artificial dissipation and should be expected to yield the most accurate solutions on a given mesh. The flux-difference splitting upwind scheme, on the other hand, is more dissipative and, thus, particularly sensitive to grid resolution, but exhibits the best overall convergence characteristics on grids with large aspect ratios.
publisherThe American Society of Mechanical Engineers (ASME)
titleAssessment of Artificial Dissipation Models for Three-Dimensional Incompressible Flow Solutions
typeJournal Paper
journal volume119
journal issue2
journal titleJournal of Fluids Engineering
identifier doi10.1115/1.2819138
journal fristpage331
journal lastpage340
identifier eissn1528-901X
keywordsFlow (Dynamics)
keywordsEnergy dissipation
keywordsResolution (Optics)
keywordsAlgorithms
keywordsDucts
keywordsLaminar flow
keywordsScalars AND Compressibility
treeJournal of Fluids Engineering:;1997:;volume( 119 ):;issue: 002
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record