Campus Units

Aerospace Engineering

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

12-2016

Journal or Book Title

International Journal of Heat and Fluid Flow

Volume

62

Issue

Part B

First Page

499

Last Page

509

DOI

10.1016/j.ijheatfluidflow.2016.08.009

Abstract

A modification to the Adaptive-DES method of Yin et al. (2015) is proposed to improve its near-wall behavior. The modification is to the function (Clim) that imposes a lower limit on the dynamically evaluated coefficient (CDES). The modification allows Adaptive-DES to converge to wall-resolved eddy simulation, when grid resolution supports it. On coarse grids, or at high Reynolds number, it reverts to shielded DES — that is to DDES. The new formulation predicts results closer to wall-resolved LES than the previous formulation. It provides an ability to simulate transition: it is tested in both orderly and bypass transition. In fully turbulent, attached flow, the modification has little effect. Any improvement in predictions stem from better near-wall behavior of the adaptive method.

Comments

This is a manuscript of an article published as Yin, Zifei, and Paul A. Durbin. "An adaptive DES model that allows wall-resolved eddy simulation." International Journal of Heat and Fluid Flow 62, part B (2016): 499-509. DOI: 10.1016/j.ijheatfluidflow.2016.08.009. Posted with permission.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Elsevier Inc.

Language

en

File Format

application/pdf

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