分岔处的振荡流分布

Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI:10.1109/NEBC.1991.154591

W. Keyer, B. Savilonis

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引用次数: 0

摘要

通过数值模拟分析了90度分岔气道高频振荡过程中的流动分布。父分支和两个子分支具有相同的长度和直径，描述了旋转90度的t型结。流被认为是层流和不可压缩的，这对于小潮汐量是合理的。由于计算时间的限制，该解决方案仅限于二维通道。这些方程是用有限差分公式求解的。根据雷诺数和斯特罗哈尔数，有可能将较大比例的潮汐量引导到两个子管道中的任何一个。

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Oscillatory flow distribution at a bifurcation

Flow-distribution in a 90 degrees bifurcated airway during high-frequency oscillation is analyzed by numerical simulation. The parent and two daughter branches are of equal length and diameter, describing a T-junction rotated by 90 degrees . The flow is considered laminar and incompressible, which is reasonable for small tidal volumes. The solution has been limited to two-dimensional channels, merely by the constraint of computational time. The equations are solved using a finite-difference formulation. Depending on the Reynolds and Strouhal numbers, it was possible to direct larger fractions of the tidal volume to either of the daughter ducts.<>

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Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference

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