DISCRETE LATTICE BGK BOLTZMANN EQUATION COMPUTATIONS OF TRANSIENT INCOMPRESSIBLE TURBULENT JETS

Kannan N. Premnath () and John Abraham ()
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Kannan N. Premnath: Maurice J. Zucrow Labs., School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA
John Abraham: Maurice J. Zucrow Labs., School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA

International Journal of Modern Physics C (IJMPC), 2004, vol. 15, issue 05, 699-719

Abstract: In this paper, computations of transient, incompressible, turbulent, plane jets using the discrete lattice BGK Boltzmann equation are reported.Á prioriderivation of the discrete lattice BGK Boltzmann equation with a spatially and temporally dependent relaxation time parameter, which is used to represent the averaged flow field, from its corresponding continuous form is given. The averaged behavior of the turbulence field is represented by the standardk–∊turbulence model and computed using a finite-volume scheme on nonuniform grids. Computed results are compared with analytical solutions, experimental data and results of other computational methods. Satisfactory agreement is shown.

Keywords: Lattice Boltzmann method; turbulence modeling; nonuniform grids; finite volume methods; turbulent jets (search for similar items in EconPapers)
Date: 2004
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DOI: 10.1142/S0129183104006157

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