کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
654132 885230 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel modified lattice Boltzmann method for simulation of gas flows in wide range of Knudsen number
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
A novel modified lattice Boltzmann method for simulation of gas flows in wide range of Knudsen number
چکیده انگلیسی

To cover a wide range of the flow regimes, a new relaxation time formulation by considering the rarefaction effect and the effective dynamic viscosity has been obtained. By using the modified lattice Boltzmann method (LBM), pressure driven flow through micro and nano channels has been modeled for wide range of Knudsen number, Kn, covering the slip, transition and to some extent the free molecular regimes. The results agree very well with existing empirical and numerical data. The velocity profile was predicted as well as the volumetric flow rate and for the first time, the well known Knudsen minimum effect has been captured about Kn = 1.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Communications in Heat and Mass Transfer - Volume 38, Issue 6, July 2011, Pages 827–832
نویسندگان
, , , ,