کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6931411 | 867558 | 2015 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new class of finite element variational multiscale turbulence models for incompressible magnetohydrodynamics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزارهای علوم کامپیوتر
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![عکس صفحه اول مقاله: A new class of finite element variational multiscale turbulence models for incompressible magnetohydrodynamics A new class of finite element variational multiscale turbulence models for incompressible magnetohydrodynamics](/preview/png/6931411.png)
چکیده انگلیسی
New large eddy simulation (LES) turbulence models for incompressible magnetohydrodynamics (MHD) derived from the variational multiscale (VMS) formulation for finite element simulations are introduced. The new models include the variational multiscale formulation, a residual-based eddy viscosity model, and a mixed model that combines both of these component models. Each model contains terms that are proportional to the residual of the incompressible MHD equations and is therefore numerically consistent. Moreover, each model is also dynamic, in that its effect vanishes when this residual is small. The new models are tested on the decaying MHD Taylor Green vortex at low and high Reynolds numbers. The evaluation of the models is based on comparisons with available data from direct numerical simulations (DNS) of the time evolution of energies as well as energy spectra at various discrete times. A numerical study, on a sequence of meshes, is presented that demonstrates that the large eddy simulation approaches the DNS solution for these quantities with spatial mesh refinement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 295, 15 August 2015, Pages 596-616
Journal: Journal of Computational Physics - Volume 295, 15 August 2015, Pages 596-616
نویسندگان
D. Sondak, J.N. Shadid, A.A. Oberai, R.P. Pawlowski, E.C. Cyr, T.M. Smith,