کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
655778 | 1457678 | 2007 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Large eddy simulation of the generation and breakdown of a tumbling flow
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Large eddy simulation of the generation and breakdown of a tumbling flow Large eddy simulation of the generation and breakdown of a tumbling flow](/preview/png/655778.png)
چکیده انگلیسی
Large eddy simulations (LES) are performed in order to reproduce the generation and the breakdown of a tumbling motion in the simplified model engine [Borée, J., Maurel, S., Bazile, R., 2002. Disruption of a compressed vortex. Phys. Fluids, 14 (7) 2543-2556]. A second-order accurate numerical scheme is applied in conjunction with a mixed finite volume/finite element formulation adapted for unstructured deforming meshes. Subgrid terms are kept as simple as possible with a Smagorinsky model in order to build a methodology devoted to engine-like flows. The main statistical quantities, such as mean velocity and turbulent kinetic energy, are obtained from a set of independent cycles and compared to experiments. Important experimental features, such as oscillations of the intake jet, vortex precession and a turbulent kinetic energy peak near the vortex core, are well reproduced.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Fluid Flow - Volume 28, Issue 1, February 2007, Pages 113-126
Journal: International Journal of Heat and Fluid Flow - Volume 28, Issue 1, February 2007, Pages 113-126
نویسندگان
Mauricio S. Toledo, Lionel Le Penven, Marc Buffat, Anne Cadiou, Judith Padilla,