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Questions tagged [lattice-boltzmann-methods]

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Combining fluid flow solver based on lattice Boltzmann method with a mechanical deformation solver based on finite element method

I'm thinking to couple my fluid flow solver based on lattice Boltzmann method with a mechanical deformation solver based on finite element method to take account for solid deformation in my models. In ...
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Derive total energy balance equation from Chapman-Enskog analysis of lattice Boltzmann equation

I'm interested to derive the total energy balance from Chapman-Enskog analysis of lattice Boltzmann equation (LBE). I know, I should go to the second moment of LBE (zeroth moment gives mass ...
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How to choose the relaxation time in the Lattice Boltzmann Method?

We know that the relaxation time is very important in LBM. I have searched lost of papers, but can't find some systematic introductions about the choice of relaxation time in SRT LBM. Could you give ...
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Flow past square cylinder benchmark in 2D. Famous papers to compare

I'm looking for a benchmark for the flow past square cylinder problem in 2D to compare my results. I have found some papers, but it seems that there are different results in different papers. I want ...
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Mesh and Lattice-Boltzmann methods

I have a pretty basic question about Lattice-Boltzmann methods. I heard that this is a meshless simulation method. How do you account for obstacles and boundaries in a Lattice-Boltzmann code. Does it ...
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Outlet boundary condisions in lattice Boltzmann Method

Here is the flow past a square cylinder configuration. The problem is a viscous and incompressible with parabolic velocity profile using freestream velocity U across single cylinder. I use the single ...
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Explain step in Lattice Boltzmann method

Actually I am reading a book about the Lattice Boltzmann methods, and here is a quotation: After introducing BGKW approximation, the Boltzmann equation (without external forces) can be approximated ...
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538 views

New to CFD, Lattice Boltzmann or Navier-Stokes?

I apologize if some of my questions are naive; I am very new to computer simulations and fluid-dynamics. I am going to start a PhD in early 2017, and I would like to bone-up on some Computational ...
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Definitiones of solid, fluid, and boundary nodes in the context of LBM

In the family of Lattice Boltzmann (LB) methods, like many others, one deals with three types of node; namely, fluid node, solid node, and boundary node. (I know; the boundary node is a subtype of ...
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Introduction to Lattice Boltzmann methods [closed]

I am trying to learn the Lattice-Boltzmann method and was looking for some good beginner resources explaining the method. I have been looking at some codes online, but have been having trouble ...