کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4452428 1620760 2013 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An efficient lattice Boltzmann model for indoor airflow and particle transport
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
پیش نمایش صفحه اول مقاله
An efficient lattice Boltzmann model for indoor airflow and particle transport
چکیده انگلیسی


• A highly efficient lattice Boltzmann based large eddy simulation model was developed.
• The multi-block grid refinement technique was employed to enhance the efficiency.
• The present models were verified by comparison with experimental and numerical data.
• The current models can produce results similar to conventional large eddy simulation.
• The current models can give better prediction than the time-averaged methods.

The three-dimensional multiple-relaxation-time LB (MRT-LB) and Lagrangian particle tracking methods were applied to simulate turbulent airflow and particle dispersion in a ventilated room with a partition. The turbulent airflow was simulated by large eddy simulation (LES) using the MRT-LB method with the Smagorinsky model. This method was verified by comparing it with experimental and other numerical results. Good agreement was observed between airflow simulation and experimental data. It is also demonstrated that the LES carried out by the MRT-LB method can produce airflow results very similar to the RNG LES and provide better prediction than the standard and RNG k–ε models. In order to further improve the efficiency of the MRT-LB method, the multi-block grid refinement (MBGR) technique was used. The accuracy and efficiency of the MBGR and the consistency of physical quantities across the interface were investigated. In simulation of particle dispersion in the model room, particles with diameters of 1 and 10 µm were considered. It is shown that this model can successfully capture dispersion characteristics of particles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Aerosol Science - Volume 63, September 2013, Pages 10–24
نویسندگان
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