1102 肺内気流のイメージベースドシミュレーション(S02-1 循環器系・呼吸器系の生体機能モデリング(1),S02 循環器系・呼吸器系の生体機能モデリング)

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  • 1102 Image-based Simulation of Pulmonary Airflow

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We have developed a new method for respiratory computational fluid dynamics (CFD) simulation using realistic airway models extracted from multi-slice computed tomography (CT) images. Pulmonary airway is multi-scale tube, which is one of the difficulties in respiratory simulation. In the viewpoint of CFD, mesh size must be refined to capture airflow in the small airways. Therefore adaptive mesh refinement (AMR) method based on Interpolated Differential Operator (IDO) scheme is applied to respiratory simulation model. Mesh size is determined by the diameter of the airways in the local domain to maintain accuracy for CFD simulation and adjust computational time. As a result of CFD analysis, we have confirmed accuracy of our new AMR adopted airflow simulation in spite of the number of computational nodes decreased 75%.

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