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.
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Copyright Owner
Elsevier Inc.
Copyright Date
2016
Language
en
File Format
application/pdf
Recommended Citation
Yin, Zifei and Durbin, Paul A., "An adaptive DES smodel that allows wall-resolved eddy simulation" (2016). Aerospace Engineering Publications. 133.
https://lib.dr.iastate.edu/aere_pubs/133
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.