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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