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High-Reynolds-number wall-modelled large eddy simulations of turbulent pipe flows using explicit and implicit subgrid stress treatments within a spectral element solver

Ferrer, E. and Saito, N. and Blackburn, H. M. and Pullin, D. I. (2019) High-Reynolds-number wall-modelled large eddy simulations of turbulent pipe flows using explicit and implicit subgrid stress treatments within a spectral element solver. Computers & Fluids, 191 . Art. No. 104239. ISSN 0045-7930. https://resolver.caltech.edu/CaltechAUTHORS:20190731-090901303

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Abstract

We present explicit and implicit large eddy simulations for fully developed turbulent pipe flows using a continuous-Galerkin spectral element solver. On the one hand, the explicit stretched-vortex model (by Misra & Pullin [45] and Chung & Pullin [14]), accounts for an explicit treatment of unresolved stresses and is adapted to the high-order solver. On the other hand, an implicit approach based on a spectral vanishing viscosity technique is implemented. The latter implicit technique is modified to incorporate Chung & Pullin virtual-wall model instead of relying on implicit dissipative mechanisms near walls. This near-wall model is derived by averaging in the wall-normal direction and relying in local inner scaling to treat the time-dependence of the filtered wall-parallel velocity. The model requires space-time varying Dirichlet and Neumann boundary conditions for velocity and pressure respectively. We provide results and comparisons for the explicit and implicit subgrid treatments and show that both provide favourable results for pipe flows at Re_τ = 2×10^3 and Re_τ = 1.8×10^5 in terms of turbulence statistics. Additionally, we conclude that implicit simulations are enhanced when including the wall model and provide the correct statistics near walls.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.compfluid.2019.104239DOIArticle
ORCID:
AuthorORCID
Ferrer, E.0000-0003-1519-0444
Additional Information:© 2019 Elsevier Ltd. Received 3 September 2018, Revised 23 June 2019, Accepted 15 July 2019, Available online 31 July 2019. The first author would like to thank financial support financial support from the project “Estancias de movilidad en el extranjero José Castillejo para jóvenes doctores” (reference JC2015-00023) of the Spanish “Ministerio de Educación”. Additionally, the authors acknowledge the computer resources and technical assistance provided by the Centro de Supercomputación y Visualización de Madrid (CeSViMa).
Group:GALCIT
Funders:
Funding AgencyGrant Number
Ministerio de Educacion y Ciencia (MEC)JC2015-00023
Subject Keywords:Turbulent pipe flow; Large eddy simulation; Stretched-vortex model; Chung & Pullin model; Spectral vanishing viscosity (SVV); Wall model; Virtual-wall model
Record Number:CaltechAUTHORS:20190731-090901303
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190731-090901303
Official Citation:E. Ferrer, N. Saito, H.M. Blackburn, D.I. Pullin, High-Reynolds-number wall-modelled large eddy simulations of turbulent pipe flows using explicit and implicit subgrid stress treatments within a spectral element solver, Computers & Fluids, Volume 191, 2019, 104239, ISSN 0045-7930, https://doi.org/10.1016/j.compfluid.2019.104239. (http://www.sciencedirect.com/science/article/pii/S0045793018305875)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97544
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:31 Jul 2019 20:03
Last Modified:01 Nov 2019 22:09

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