B124 嗅覚機能に着目したヒト鼻腔内流れの数値流体解析(B-12 生体流体(2),一般講演)

概要

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Nasal flow in smell was simulated by CFD. An anatomically correct model of the human nasal cavity containing nasopharynx was constructed from the 141 slices of coronal CT scan of a healthy adult nose. Voxel 3D model was made using INTAGE3.1 (KGT) and the surface data was gained using marching cube method. Nasal/Nasopharyngeal cavity was divided into about 1.2 million elements. Main calculation was done using Fluent 6.1. The conditions were inspiratory/expiratory flow and steady/unsteady flow. In steady flow, the uppermost streamline of the inspiratory phase run near the olfactory area, but the uppermost streamline of the expiratory phase run away from the olfactory area. In unsteady flow, the uppermost streamline gets closer to the olfactory area on the progress of the inspiratory respiration, and the uppermost streamline withdraws from the olfactory area on the progress of the expiratory respiration.
2004-08-09