颗粒在模型气道中的沉积。

Deposition of particles in model airways.

作者信息

Johnston J R, Schroter R C

出版信息

J Appl Physiol Respir Environ Exerc Physiol. 1979 Nov;47(5):947-53. doi: 10.1152/jappl.1979.47.5.947.

DOI:10.1152/jappl.1979.47.5.947

Abstract

The deposition of monodisperse aerosols in models of single lung airway bifurcations was studied. The particles, generated by spinning disk, were in the size range of 4.2--8.8 microns (density 1.3 X 10(3) kg . m-3). The model bifurcations were symmetrical, of physiological size, and based on established morphological data. The effects on percentage deposition (P) of flow rate (expressed as Reynolds' number. Re), particle diameter (d), tube diameter (D), and bifurcation angle (2 theta) were studied and a generalized expression for deposition based on these variables was obtained, viz., P = 11.04 X 10(5) Re (d/D)2.5sin3 theta. The applicability of this equation is discussed.

摘要

研究了单肺气道分叉模型中单核气溶胶的沉积情况。通过旋转盘产生的颗粒尺寸范围为4.2 - 8.8微米（密度为1.3×10³千克·米⁻³）。模型分叉是对称的，具有生理尺寸，并基于已建立的形态学数据。研究了流速（以雷诺数Re表示）、颗粒直径（d）、管径（D）和分叉角（2θ）对沉积百分比（P）的影响，并得到了基于这些变量的沉积通用表达式，即P = 11.04×10⁵Re(d/D)².⁵sin³θ。讨论了该方程的适用性。