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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#314_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/118926
description abstractAn efficient artificial compressibility algorithm is developed for solving the three-dimensional Reynolds-averaged Navier-Stokes equations in conjunction with the low-Reynolds number k-ω turbulence model (Wilcox, 1994). Two second-order accurate central-differencing schemes, with scalar and matrix-valued artificial dissipation, respectively, and a third-order accurate flux-difference splitting upwind scheme are implemented for discretizing the convective terms. The discrete equations are integrated in time using a Runge-Kutta algorithm enhanced with local time stepping, implicit residual smoothing, and V-cycle multigrid acceleration with full- and semi-coarsening capabilities. Both loosely and strongly-coupled strategies for solving the turbulence closure equations are developed and their relative efficiency is evaluated. Calculations are carried out for turbulent flow through a strongly-curved 180 deg pipe bend discretized with fine, highly-stretched and skewed meshes. It is shown that the strongly-coupled multigrid algorithm, with semi-coarsening in the transverse plane, is an efficient approach for simulating flows of practical interest with advanced near-wall turbulence closures.
publisherThe American Society of Mechanical Engineers (ASME)
titleStrongly-Coupled Multigrid Method for 3-D Incompressible Flows Using Near-Wall Turbulence Closures
typeJournal Paper
journal volume119
journal issue2
journal titleJournal of Fluids Engineering
identifier doi10.1115/1.2819136
journal fristpage314
journal lastpage324
identifier eissn1528-901X
keywordsFlow (Dynamics)
keywordsTurbulence
keywordsAlgorithms
keywordsEquations
keywordsPipe bends
keywordsCycles
keywordsScalars
keywordsCompressibility
keywordsEnergy dissipation AND Navier-Stokes equations
treeJournal of Fluids Engineering:;1997:;volume( 119 ):;issue: 002
contenttypeFulltext


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