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Gas Absorption in Pulmonary Airways at Low Peclet Number
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A mathematical model is presented that investigates the mass transport of a diffusible and soluble gas contaminant through a liquid-lined tube when the Peclet number is small. The transport is ...
Surfactant Effects on Fluid-Elastic Instabilities of Liquid-Lined Flexible Tubes: A Model of Airway Closure
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A theoretical analysis is presented predicting the closure of small airways in the region of the terminal and respiratory bronchioles. The airways are modelled as thin elastic tubes, coated on ...
Erratum: “Surfactant Effects on Fluid-Elastic Instabilities of Liquid-Lined Tubes: A Model of Airway Closure” (Journal of Biomechanical Engineering, 1993, 115, pp. 271–277)
Publisher: The American Society of Mechanical Engineers (ASME)
Convection-Diffusion Interaction for Oscillatory Flow in a Tapered Tube
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Transport of soluble material is analyzed for volume-cycle oscillatory flow in a tapered tube. The equations of motion are solved using a regular perturbation method for small taper angle and ...
Liquid Plug Flow in Straight and Bifurcating Tubes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A finite-length liquid plug may be present in an airway due to disease, airway closure, or by direct instillation for medical therapy. Air forced by ventilation propagates the plug through the ...
Effect of Gravity on Liquid Plug Transport Through an Airway Bifurcation Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Many medical therapies require liquid plugs to be instilled into and delivered throughout the pulmonary airways. Improving these treatments requires a better understanding of how liquid distributes ...
An Analysis of Pollutant Gas Transport and Absorption in Pulmonary Airways
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A mathematical model of ozone absorption, or for any soluble gas that has similar transport properties, is developed for a branching network of liquid-lined cylinders. In particular, we investigate ...
Effects of Inertia and Gravity on Liquid Plug Splitting at a Bifurcation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Liquid plugs may form in pulmonary airways during the process of liquid instillation or removal in many clinical treatments. During inspiration the plug may split at airway bifurcations and ...
The Effect of Airway Wall Motion on Surfactant Delivery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Soluble surfactant and airway surface liquid transport are examined using a mathematical model of Marangoni flows which accounts for airway branching and for cyclic airway stretching. Both radial ...
Linear Flow and Deformation in a Poroelastic Disk With a Free Surface
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The equilibration of an axisymmetric, linearly poroelastic layer of finite thickness is determined given an immobile, impermeable base and an impermeable, stress-free top surface. Analytical and ...