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Imposition of the no-slip boundary condition via modified equilibrium distribution function in Lattice Boltzmann method

Sharafatmandjoor, Shervin and Che Sidik, Nor Azwadi and Fathalizadeh, Hamidreza (2015) Imposition of the no-slip boundary condition via modified equilibrium distribution function in Lattice Boltzmann method. International Communications in Heat and Mass Transfer, 62 . pp. 33-36. ISSN 0735-1933

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Official URL: http://dx.doi.org/10.1016/j.icheatmasstransfer.201...

Abstract

A novel scheme for implementation of the no-slip boundary conditions in the lattice Boltzmann method is presented. In detail, we have substituted the classical bounce-back idea by the direct velocity boundary condition specification employing geometric-based manipulation of the equilibrium distribution functions. In this way we have constructed the equilibrium density function in such a way that it imposes the desired Dirichlet boundary conditions at numerical boundary points. Therefore, in fact a kind of equilibrium boundary condition is made. This specification for general curved solid surfaces is made by means of immersed boundary concepts, but without any need to interpolating density distribution values. On the other hand, the results show that the method presents a faster solution procedure in comparison to the bounce-back scheme.

Item Type:Article
Uncontrolled Keywords:immersed boundary technique, lattice boltzmann method
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:55677
Deposited By: Fazli Masari
Deposited On:27 Sep 2016 00:56
Last Modified:15 Feb 2017 01:53

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