کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
520725 867734 2009 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Implementation of diffuse reflection boundary conditions in a thermal lattice Boltzmann model with flux limiters
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Implementation of diffuse reflection boundary conditions in a thermal lattice Boltzmann model with flux limiters
چکیده انگلیسی

We discuss three new implementation versions of diffuse reflection boundary conditions in a thermal lattice Boltzmann model. Their accuracy is investigated in the case of Couette flow by considering the slip regime. The best results are recovered with versions 2 and 3, which rely on outgoing fluxes to express the particle distribution functions in the ghost nodes outside the flow domain. Version 2 is found to be more economical since it involves no interpolation procedure. This version was thereafter used to investigate the temperature profile in Couette flow for various values of Prandtl number, as well as the capability of the thermal LB model to capture the Knudsen minimum in Poiseuille flow.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 228, Issue 17, 20 September 2009, Pages 6107–6118
نویسندگان
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