シミュレーションによる肺呼吸の動力学 : 表面張力の影響

概要

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The respiratory dynamics of an excised lung are studied in terms of a numerical simulation to determine the surface tension influence. For a model of lung dynamics consisting of an airway network and parenchyma subsystems, the gas-tissue interaction including the surface tension on the parenchymal microstructure is taken into account. Under a given environment and considering the interdependence of the subsystems, the flow equations modified by an airway elasticity of finite deformation are solved by a finite element scheme based on the adjoint variational principle. A simple but reasonable model is proposed and incorporated into the total model to describe the surface tension influence. Though several case studies with this model, it is demonstrated that the surface tension is significantly important to lung dynamics including stability of respiration.
一般社団法人日本機械学会の論文
1988-09-25