کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6932324 | 867728 | 2014 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lattice-Boltzmann simulations of the thermally driven 2D square cavity at high Rayleigh numbers
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزارهای علوم کامپیوتر
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چکیده انگلیسی
The thermal lattice Boltzmann equation (TLBE) with multiple-relaxation-times (MRT) collision model is used to simulate the steady thermal convective flows in the two-dimensional square cavity with differentially heated vertical walls at high Rayleigh numbers. The MRT-TLBE consists of two sets of distribution functions, i.e., a D2Q9 model for the mass-momentum equations and a D2Q5 model for the temperature equation. The dimensionless flow parameters are the following: the Prandtl number Pr=0.71 and the Rayleigh number Ra=106,107, and 108. The D2Q9+D2Q5 MRT-TLBE is shown to be second-order accurate and to be capable of yielding results of benchmark quality, including various Nusselt numbers and local hydrodynamic intensities. Our results also agree well with existing benchmark data obtained by other methods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 275, 15 October 2014, Pages 257-272
Journal: Journal of Computational Physics - Volume 275, 15 October 2014, Pages 257-272
نویسندگان
Dario Contrino, Pierre Lallemand, Pietro Asinari, Li-Shi Luo,