Wall-distance-free formulation for SST k-ω model

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Wall-distance-free formulation for SST k-ω model. / Rahman, M. M.; Vuorinen, V.; Taghinia, J.; Larmi, M.

In: European Journal of Mechanics, B/Fluids, Vol. 75, 01.05.2019, p. 71-82.

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@article{943bdcadcedd4d7790b02b356d6ed810,
title = "Wall-distance-free formulation for SST k-ω model",
abstract = "Two different wdf (wall-distance-free) approaches are devised using local wall-distance and dissipation based representations to obtain consistency formulations for blending functions associated with the SST model. The strain-dependent coefficient C̄μ assists the SST model in constructing the functions such as to benefit complex flows with non-equilibrium turbulence, while retaining the predictive quality of unmodified SST closure. Naturally, the proposed methods allow the original SST model to be modified accurately and alleviate the free-stream dependency. Comparisons with the original SST k-ω model demonstrate that the newly developed alternatives to actual wall-distance usually improve the response of SST model to non-equilibrium effects.",
keywords = "Blending functions, Non-equilibrium flow, SST turbulence model, Wall-distance-free, REYNOLDS-STRESS, TURBULENCE MODELS, ARTIFICIAL COMPRESSIBILITY METHOD, NEAR-WALL",
author = "Rahman, {M. M.} and V. Vuorinen and J. Taghinia and M. Larmi",
year = "2019",
month = "5",
day = "1",
doi = "10.1016/j.euromechflu.2018.11.010",
language = "English",
volume = "75",
pages = "71--82",
journal = "EUROPEAN JOURNAL OF MECHANICS B: FLUIDS",
issn = "0997-7546",
publisher = "Elsevier BV",

}

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TY - JOUR

T1 - Wall-distance-free formulation for SST k-ω model

AU - Rahman, M. M.

AU - Vuorinen, V.

AU - Taghinia, J.

AU - Larmi, M.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - Two different wdf (wall-distance-free) approaches are devised using local wall-distance and dissipation based representations to obtain consistency formulations for blending functions associated with the SST model. The strain-dependent coefficient C̄μ assists the SST model in constructing the functions such as to benefit complex flows with non-equilibrium turbulence, while retaining the predictive quality of unmodified SST closure. Naturally, the proposed methods allow the original SST model to be modified accurately and alleviate the free-stream dependency. Comparisons with the original SST k-ω model demonstrate that the newly developed alternatives to actual wall-distance usually improve the response of SST model to non-equilibrium effects.

AB - Two different wdf (wall-distance-free) approaches are devised using local wall-distance and dissipation based representations to obtain consistency formulations for blending functions associated with the SST model. The strain-dependent coefficient C̄μ assists the SST model in constructing the functions such as to benefit complex flows with non-equilibrium turbulence, while retaining the predictive quality of unmodified SST closure. Naturally, the proposed methods allow the original SST model to be modified accurately and alleviate the free-stream dependency. Comparisons with the original SST k-ω model demonstrate that the newly developed alternatives to actual wall-distance usually improve the response of SST model to non-equilibrium effects.

KW - Blending functions

KW - Non-equilibrium flow

KW - SST turbulence model

KW - Wall-distance-free

KW - REYNOLDS-STRESS

KW - TURBULENCE MODELS

KW - ARTIFICIAL COMPRESSIBILITY METHOD

KW - NEAR-WALL

UR - http://www.scopus.com/inward/record.url?scp=85059685033&partnerID=8YFLogxK

U2 - 10.1016/j.euromechflu.2018.11.010

DO - 10.1016/j.euromechflu.2018.11.010

M3 - Article

VL - 75

SP - 71

EP - 82

JO - EUROPEAN JOURNAL OF MECHANICS B: FLUIDS

JF - EUROPEAN JOURNAL OF MECHANICS B: FLUIDS

SN - 0997-7546

ER -

ID: 31344486