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Title: A simple dynamic subgrid-scale model for LES of particle-laden turbulence

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1351693
Grant/Contract Number:
NA0002373
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Fluids
Additional Journal Information:
Journal Volume: 2; Journal Issue: 4; Related Information: CHORUS Timestamp: 2017-04-14 22:11:01; Journal ID: ISSN 2469-990X
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Park, George Ilhwan, Bassenne, Maxime, Urzay, Javier, and Moin, Parviz. A simple dynamic subgrid-scale model for LES of particle-laden turbulence. United States: N. p., 2017. Web. doi:10.1103/PhysRevFluids.2.044301.
Park, George Ilhwan, Bassenne, Maxime, Urzay, Javier, & Moin, Parviz. A simple dynamic subgrid-scale model for LES of particle-laden turbulence. United States. doi:10.1103/PhysRevFluids.2.044301.
Park, George Ilhwan, Bassenne, Maxime, Urzay, Javier, and Moin, Parviz. Fri . "A simple dynamic subgrid-scale model for LES of particle-laden turbulence". United States. doi:10.1103/PhysRevFluids.2.044301.
@article{osti_1351693,
title = {A simple dynamic subgrid-scale model for LES of particle-laden turbulence},
author = {Park, George Ilhwan and Bassenne, Maxime and Urzay, Javier and Moin, Parviz},
abstractNote = {},
doi = {10.1103/PhysRevFluids.2.044301},
journal = {Physical Review Fluids},
number = 4,
volume = 2,
place = {United States},
year = {Fri Apr 14 00:00:00 EDT 2017},
month = {Fri Apr 14 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevFluids.2.044301

Citation Metrics:
Cited by: 1work
Citation information provided by
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  • We propose a formulation of the subgrid-scale estimation model in which the effects of the estimated subgrid scales on the resolved scales are obtained through the truncated Navier-Stokes dynamics and the calculation of the subgrid-scale stress tensor is not required. For high Reynolds number isotropic turbulence the model predicts the k{sup -5/3} spectrum with the correct value of the Kolmogoroff constant. (c) 2000 American Institute of Physics.
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  • Turbulence is one of the most commonly occurring phenomena of engineering interest in the field of fluid mechanics. Since most flows are turbulent, there is a significant payoff for improved predictive models of turbulence. One area of concern is the turbulent buffeting forces experienced by the tubes in steam generators of nuclear power plants. Although the Navier-Stokes equations are able to describe turbulent flow fields, the large number of scales of turbulence limit practical flow field calculations with current computing power. The dynamic subgrid scale closure model of Germano et. al (1991) is used in the large eddy simulation codemore » GUST for incompressible isothermal flows. Tube bundle geometries of staggered and non-staggered arrays are considered in deep bundle simulations. The advantage of the dynamic subgrid scale model is the exclusion of an input model coefficient. The model coefficient is evaluated dynamically for each nodal location in the flow domain. Dynamic subgrid scale results are obtained in the form of power spectral densities and flow visualization of turbulent characteristics. Comparisons are performed among the dynamic subgrid scale model, the Smagorinsky eddy viscosity model (Smagorinsky, 1963) (that is used as the base model for the dynamic subgrid scale model) and available experimental data. Spectral results of the dynamic subgrid scale model correlate better with experimental data. Satisfactory turbulence characteristics are observed through flow visualization.« less