Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Computation of Stratified Flows using Finite Difference Lattice Boltzmann Method

  • Kang, Ho-Keun (School of Mechanical and Aerospace Engineering, Institute of Marine Industry, Gyeongsang National University) ;
  • Kim, Won-Cheol (School of Mechanical and Aerospace Engineering, Institute of Marine Industry, Gyeongsang National University)
  • Published : 2003.07.01
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Abstract

A stratified flow is simulated using the finite difference lattice Boltzmann method (FDLBM). The effect of body force (gravity) in a simple one-dimensional model with the lattice BGK 9 velocity is examined. The effect of body force in the compressible fluid is greatly different from that of the incompressible fluid In a compressible fluid under gravitational force, the density stratification is not sufficient and the entropy stratification is essential. The numerical simulation of a line sink compressible stratified flow in two-dimensional channel is also carried out. The results show that selective withdrawal is established when the entropy of the upper part increases. and the simulated results using FDLB method are satisfactory compared with the theoretical one.

Keywords

References

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