On the dynamic computation of the model constant in delayed detached eddy simulation

dc.contributor.author Yin, Zifei
dc.contributor.author Reddy, K.R.
dc.contributor.author Durbin, Paul
dc.contributor.department Aerospace Engineering
dc.date 2018-02-17T07:37:15.000
dc.date.accessioned 2020-06-29T22:46:07Z
dc.date.available 2020-06-29T22:46:07Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2015
dc.date.issued 2015-01-01
dc.description.abstract <p>The current work puts forth an implementation of a dynamic procedure to locally compute the value of the model constant CDES , as used in the eddy simulation branch of Delayed Detached Eddy Simulation (DDES). Former DDES formulations [P. R. Spalart et al., “A new version of detached-eddy simulation, resistant to ambiguous grid densities,” Theor. Comput. Fluid Dyn. 20, 181 (2006); M. S. Gritskevich et al., “Development of DDES and IDDES formulations for the k- ω shear stress transport model,” Flow, Turbul. Combust. 88, 431 (2012)] are not conducive to the implementation of a dynamic procedure due to uncertainty as to what form the eddy viscosity expression takes in the eddy simulation branch. However, a recent, alternate formulation [K. R. Reddy et al., “A DDES model with a Smagorinsky-type eddy viscosity formulation and log-layer mismatch correction,” Int. J. Heat Fluid Flow 50, 103 (2014)] casts the eddy viscosity in a form that is similar to the Smagorinsky, LES (Large Eddy Simulation) sub-grid viscosity. The resemblance to the Smagorinsky model allows the implementation of a dynamic procedure similar to that of Lilly [D. K. Lilly, “A proposed modification of the Germano subgrid-scale closure method,” Phys. Fluids A 4, 633 (1992)]. A limiting function is proposed which constrains the computed value of CDES , depending on the fineness of the grid and on the computed solution.</p>
dc.description.comments <p>The following article appeared in Physics of Fluids 27, 025105 (2015); 1 and may be found at <a href="http://dx.doi.org/10.1063/1.4907746" target="_blank">doi:10.1063/1.4907746</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aere_pubs/62/
dc.identifier.articleid 1061
dc.identifier.contextkey 7917719
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_pubs/62
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/2064
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aere_pubs/62/2015_Durbin_Dynamic_Computation.pdf|||Sat Jan 15 01:18:10 UTC 2022
dc.source.uri 10.1063/1.4907746
dc.subject.disciplines Aerodynamics and Fluid Mechanics
dc.subject.disciplines Other Aerospace Engineering
dc.subject.disciplines Structures and Materials
dc.subject.keywords navier stokes equations
dc.subject.keywords eddies
dc.subject.keywords large eddy simulations
dc.subject.keywords viscosity
dc.subject.keywords eddy viscosity closure
dc.title On the dynamic computation of the model constant in delayed detached eddy simulation
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 3f74ce5e-8f72-4b32-9592-72cb91b67eb1
relation.isOrgUnitOfPublication 047b23ca-7bd7-4194-b084-c4181d33d95d
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