نتایج جستجو برای: lattice boltzmann method lbm

تعداد نتایج: 1717259  

2013
Tanmay Agrawal Chao-An Lin

Incompressible two dimensional lattice Boltzmann method (LBM) is adopted to simulate flow inside a pipe commonly called Poiseuille flow. Instead of D2Q9 lattice Boltzmann model, we used an incompressible two-dimensional model, D2Q9i to simulate the flow conditions. At the inlet, velocity boundary condition, while at outlet, pressure boundary condition and at the surfaces, no slip boundary condi...

2006
Aditya Nitsure Klaus Iglberger Ulrich Rüde Christian Feichtinger Gerhard Wellein Georg Hager Friedrich Alexander

The Lattice Boltzmann Method (LBM) is one of the modern techniques to simulate fluids. A lot of work has already been done to speed up the LBM on cache-based microprocessor architecture. In order to achieve high performance on these architectures, not only the clock rate of the processor plays an important role, but also the significant influence of the caches have to be taken into account. A c...

Journal: :CoRR 2015
Julien Duchateau François Rousselle Nicolas Maquignon Gilles Roussel Christophe Renaud

In this paper, a new progressive mesh algorithm is introduced in order to perform fast physical simulations by the use of a lattice Boltzmann method (LBM) on a single-node multi-GPU architecture. This algorithm is able to mesh automatically the simulation domain according to the propagation of fluids. This method can also be useful in order to perform several types of physical simulations. In t...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده مهندسی 1394

در این پژوهش، اثرات جریان برشی ساده بر روی یک حباب یا قطره معلق در فاز بیرونی، به کمک یک روش سطح پخشی انرژی آزاد شبکه بولتزمن (lbm) بررسی شده است. رفتار حباب و قطره در یک سیستم مایع-بخار تحت جریان برسی به کمک دو پارامتر بی بعد نسبت لزجت (?) و عدد مویینگی (ca) تعریف شده است.

2014
Ahmed Mahmoudi Mohamed A. Abbassi

The radiation effect within the solid anode, electrolyte, and cathode SOFC layers problem has been investigated in this paper. Energy equation is solved by the Lattice Boltzmann method (LBM). The Rosseland method is used to model the radiative transfer in the electrodes. The Schuster-Schwarzschild method is used to model the radiative transfer in the electrolyte. Without radiatve effect, the fo...

2009
C. Z. JI C. SHU N. ZHAO C. Z. Ji C. Shu

This paper presents an approach, which combines the conventional finite volume method (FVM) with the lattice Boltzmann Method (LBM), to simulate compressible flows. Similar to the Godunov scheme, in the present approach, LBM is used to evaluate the flux at the interface for local Riemann problem when solving Euler/Navier-Stokes (N-S) equations by FVM. Two kinds of popular compressible Lattice B...

In this paper, implementation of an extended form of a no-slip wall boundary condition is presented for the three-dimensional (3-D) lattice Boltzmann method (LBM) for solving the incompressible fluid flows with complex geometries. The boundary condition is based on the off-lattice scheme with a polynomial interpolation which is used to reconstruct the curved or irregular wall boundary on the ne...

2015
Robert Straka

The Lattice Boltzmann Method (LBM) was used for simulation of a gas flow and conjugate heat transfer in fixed packed beds with solid particles inside. D2Q9 version of the Factorized Central Moment (FCMLBM) is used for a gas flow computation. Heating transfer in the bed is described by second distribution function set and multiple relaxation time lattice Boltzmann method (DDF MRT LBM) is used. N...

2014
Imen Mejri Mohamed A. Abbassi

Abstract—A new algorithm based on the lattice Boltzmann method (LBM) is proposed as a potential solver for one-dimensional heat and mass transfer for isothermal carbonization of wood particles. To check the validity of this algorithm, the LBM results have been compared with the published data and a good agreement is obtained. Then, the model is used to study the effect of reactor temperature an...

2007
Nils Thürey

In the following, we will present an algorithm to perform adaptive free surface simulations with the lattice Boltzmann method (LBM) on machines with shared and distributed memory architectures. Performance results for different test cases and architectures will be given. The algorithm for parallelization yields a high performance, and can be combined with the adaptive LBM simulations. Moreover,...

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