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Article
An adaptive DES smodel that allows wall-resolved eddy simulation
International Journal of Heat and Fluid Flow
  • Zifei Yin, Iowa State University
  • Paul A. Durbin, Iowa State University
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
12-1-2016
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 International
Copyright Owner
Elsevier Inc.
Language
en
File Format
application/pdf
Citation Information
Zifei Yin and Paul A. Durbin. "An adaptive DES smodel that allows wall-resolved eddy simulation" International Journal of Heat and Fluid Flow Vol. 62 Iss. Part B (2016) p. 499 - 509
Available at: http://works.bepress.com/paul_durbin/24/