J0206-3-5 呼吸で生じる末梢気道内流れに関するCFD解析([J0206-3]生命体統合シミュレーション(3))

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This paper describes preliminary results of our CFD analysis that investigates respiratory flows in a human lung. Our study focuses on micro-scale airflows in peripheral airways, including respiratory bronchioles and alveoli. The complicated geometry of a human lung is described with rectangular uniform calculation cells combined with VOF functions in our numerical model. This feature clearly distinguishes our approach from conventional work based on finite element methods (FEM) using boundary-fitted unstructured mesh. We adopt the former approach because we aim at developing software that facilitates clinicians to promptly carry out numerical simulations in hospital by using digital data such as X-ray CT images without consuming time and effort for the generation a calculation mesh to diagnose and treat their patients. We calculated some low-Reynolds-number flows with simple geometries consisting of some spheres and a cylinder to test the validity of our numerical model and obtained fairly good results.
一般社団法人日本機械学会の論文
2010-09-04