薄宾汉流体层在气道分叉处的曲率驱动输运

IF 2.5 3区物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS

Physical Review Fluids Pub Date : 2024-08-07 DOI:10.1103/physrevfluids.9.l081101

Cyril Karamaoun, Haribalan Kumar, Médéric Argentina, Didier Clamond, Benjamin Mauroy

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引用次数: 0

摘要

支气管壁上的粘液形成一层薄薄的非牛顿流体，通过捕捉吸入的污染物来保护肺部。由于粘液层与空气的界面呈波纹状，粘液层受到表面张力的作用，从而影响其流变性。我们利用润滑理论和三维模拟对这一物理系统进行了分析。我们描述了粘液的非线性行为，并表明表面张力效应会使气道分叉处过厚的粘液层发生位移。这种移动会扰乱粘液纤毛清除，破坏粘液层厚度的均匀性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Curvature-driven transport of thin Bingham fluid layers in airway bifurcations

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Curvature-driven transport of thin Bingham fluid layers in airway bifurcations

The mucus on the bronchial wall forms a thin layer of non-Newtonian fluid, protecting the lungs by capturing inhaled pollutants. Due to the corrugation of its interface with air, this layer is subject to surface tension forces that affect its rheology. This physical system is analyzed using lubrication theory and three-dimensional simulations. We characterize the nonlinear behavior of the mucus and show that surface tension effects can displace overly thick mucus layers in airway bifurcations. This movement can disrupt the mucociliary clearance and break the homogeneity of the layer thickness.

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来源期刊

Physical Review Fluids Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

5.10

自引率

11.10%

发文量

488

期刊介绍： Physical Review Fluids is APS’s newest online-only journal dedicated to publishing innovative research that will significantly advance the fundamental understanding of fluid dynamics. Physical Review Fluids expands the scope of the APS journals to include additional areas of fluid dynamics research, complements the existing Physical Review collection, and maintains the same quality and reputation that authors and subscribers expect from APS. The journal is published with the endorsement of the APS Division of Fluid Dynamics.