有限体積格子ボルツマン法による空力音の直接計算(流体工学,流体機械)

概要

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In this paper, we presented two simulation results by the finite volume lattice Boltzmann method and unstructured grids. Incompressible flow in a square cavity shows good agreement with the standard solution based on the Navier-Stokes equations, and the proposed boundary condition is shown to be satisfactory. A direct simulation of the Aeolian tone is also performed and the sound pressure is compared with the Navier-Stokes based accurate solution. It is shown that the pressure is about 20% smaller than the N-S based result, and it is considered to be due to coarseness of the grid and using a second order accurate scheme. However, it is shown that the sound waves emitted from complex shaped bodies can be easily simulated by proposed technique.
社団法人日本機械学会の論文
2006-12-25