下呼吸道重开的生物流体力学研究:理论分析

Biofluid mechanics investigation on obstructed pulmonary lower airway reopening: theoretical analysis

本文理论分析了受阻塞肺下呼吸道重开的生物流体力学问题。解控制流动的低雷诺数的 Stokes方程 ,得出阻塞液前阵面和指状气泡前阵面的位置、速度等公式。所得结果和作者前文所发表的实验结果 [17] 吻合得相当好。进一步分析表明阻塞液粘度、管径和外加压强对流动有较大影响 ,毛细数 Ca同样受到这些参数的影响。

The obstructed lower airway reopening was considered theoretically in this paper. The expressions of both positions and velocities of liquid front and bubble front were deduced by solving the Stokes equation at low Reynolds number. It is showed that the theoretical results coincide with experimental results, and the liquid viscosity, tube diameter, applied pressure have appreciable effects on flow patterns and capillary number C a.