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dc.contributorVirginia Tech
dc.contributor.authorIliescu, T.
dc.contributor.authorFischer, P. F.
dc.date.accessioned2014-04-24T18:34:14Z
dc.date.available2014-04-24T18:34:14Z
dc.date.issued2003-10
dc.identifier.citationIliescu, T; Fischer, PF, "large eddy simulation of turbulent channel flows by the rational large eddy simulation model," Phys. Fluids 15, 3036 (2003); http://dx.doi.org/10.1063/1.1604781
dc.identifier.issn1070-6631
dc.identifier.urihttp://hdl.handle.net/10919/47634
dc.description.abstractThe rational large eddy simulation (RLES) model is applied to turbulent channel flows. This approximate deconvolution model is based on a rational (subdiagonal Pade) approximation of the Fourier transform of the Gaussian filter and is proposed as an alternative to the gradient (also known as the nonlinear or tensor-diffusivity) model. We used a spectral element code to perform large eddy simulations of incompressible channel flows at Reynolds numbers based on the friction velocity and the channel half-width Re(tau)=180 and Re(tau)=395. We compared the RLES model with the gradient model and the Smagorinsky model with Van Driest damping. The RLES model was much more stable than the gradient model and yielded improved results. Both the RLES model and the gradient model predicted the off-diagonal Reynolds stresses better than the Smagorinsky model with Van Driest damping. The latter, however, yielded better results for the diagonal Reynolds stresses. (C) 2003 American Institute of Physics.
dc.description.sponsorshipMathematical, Information, and Computational Sciences Division subprogram of the Office of Advanced Scientific Computing Research, U.S. Department of Energy, under Contract No. W-31-109-Eng-38
dc.description.sponsorshipU.S. Department of Energy, Office of Advanced Scientific Computing, SciDAC program "The Terascale Simulation Tools and Techniques (TSTT) Center,"
dc.description.sponsorshipNSF Grant No. DMS-0209309
dc.language.isoen_US
dc.publisherAIP Publishing
dc.subjectapproximate deconvolution model
dc.subjectdirect numerical-simulation
dc.subjectscale
dc.subjectestimation model
dc.subjectsubgrid-scale
dc.subjectcomplex-geometry
dc.subjectreynolds-number
dc.subjectmixing layer
dc.subjectstatistics
dc.subjectequations
dc.titlelarge eddy simulation of turbulent channel flows by the rational large eddy simulation model
dc.typeArticle - Refereed
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/pof2/15/10/10.1063/1.1604781
dc.date.accessed2014-04-04
dc.title.serialPhysics of Fluids
dc.identifier.doihttps://doi.org/10.1063/1.1604781


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