DNS of Incompressible Flows Using Lattice Boltzmann Method
KYOTO INST OF TECH (JAPAN) DEPT OF MECHANICAL AND SYSTEM ENGINEERING
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Numerical simulations using the lattice Boltzmann method are presented for the two and three dimensional decaying homogeneous isotropic turbulence for low, medium and high Reynolds numbers. Time history of global statistical quantities, wave number spectra, and vorticity contour plots are compared with those of the higher order method of lines. Comparisons between the square lattice and the triangular FHP lattice models are also performed. It is found that the lattice Boltzmann method is able to reproduce the dynamics of decaying turbulence and could be an alternative for solving the Navier Stokes equations. Computational costs of the lattice Boltzmann method is less than half of that of the 10th-order method of lines.
- Fluid Mechanics