کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
672400 | 887501 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A fluctuating lattice-Boltzmann model for direct numerical simulation of particle Brownian motion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A fluctuating lattice-Boltzmann model for direct numerical simulation of particle Brownian motion A fluctuating lattice-Boltzmann model for direct numerical simulation of particle Brownian motion](/preview/png/672400.png)
چکیده انگلیسی
A single-relaxation-time fluctuating lattice-Boltzmann (LB) model for direct numerical simulation (DNS) of particle Brownian motion is established by adding a fluctuating component to the lattice-Boltzmann equations (LBEs). The fluctuating term is proved to be the random stress tensor in fluctuating hydrodynamics by recovering Navier-Stokes equations from LBEs through a Chapman-Enskog expansion. A three-dimensional implementation of the model is also presented, along with simulations of a single spherical particle and 125 spherical particles at short times. Numerical results including the mean-square displacement, velocity autocorrelation function and self-diffusion coefficient of particles compare favorably with theoretical results and previous numerical results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Particuology - Volume 7, Issue 6, December 2009, Pages 501-506
Journal: Particuology - Volume 7, Issue 6, December 2009, Pages 501-506
نویسندگان
Deming Nie, Jianzhong Lin,