声門形状における非定常粘性流れの有限要素シミュレーション

概要

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Some results of a unsteady numerical analysis by Finite Element Method are shown to analyze the fluid flow mechanism in the glottis. We regard the air from the lung as the incompressible viscous fluid. The spatial discreting technique of Navier-Stokes equations used is the velocity correction method. We briefly note the velocity correction method and introduce some two dimensional finite element models based on the physical glottal shape model already proposed. The time-varying flow patterns up to Reynolds numbers' range of 1500,which is near to the real flow in the glottis, are simulated. In these patterns, the vortices are generated at the outlets from the narrow area and they move through the models downstreams. It is shown that the flow patterns much depend on their shapes.
日本シミュレーション学会の論文
1989-06-15