کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
657438 1458063 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sub-continuum thermal transport modeling using diffusion in the Lattice Boltzmann Transport Equation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Sub-continuum thermal transport modeling using diffusion in the Lattice Boltzmann Transport Equation
چکیده انگلیسی
The Boltzmann Transport Equation is employed to model one-dimensional heat conduction problems at sub-continuum scales. A semi-gray Lattice Boltzmann (LB) model is presented and validated against a diffusive model of steady state thin film heat conduction with temperature boundary conditions. The size-dependent effective thermal conductivity curves of a gray LB model and a semi-gray LB model for Silicon are generated. In addition, a new semi-gray LB model with diffusion term is applied to determine the effective thermal conductivity. The transient features and dimension concerns of the new semi-gray LB model are also investigated. Results demonstrate that the semi-gray LB model with a diffusion term successfully recovers the size-dependent data of effective thermal conductivity and matches well with the diffusive solution valid at large scales. This approach can be applied to improve the accuracy of thermal modeling on micro-scale electronic systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 79, December 2014, Pages 666-675
نویسندگان
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