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RISFlow and Particle Dispersion in Lung Acini: Effect of Geometric and Dynamic Parameters During Synchronous Ventilation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The human lung comprises about 300 million alveoli which are located on bronchioles between the 17th to 24th generations of the acinar tree, with a progressively higher population density in ...
Flow and Particle Dispersion in a Pulmonary Alveolus—Part I: Velocity Measurements and Convective Particle Transport
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The alveoli are the smallest units of the lung that participate in gas exchange. Although gas transport is governed primarily by diffusion due to the small length scales associated with the ...
Flow and Particle Dispersion in a Pulmonary Alveolus—Part II: Effect of Gravity on Particle Transport
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The acinar region of the human lung comprises about 300×106 alveoli, which are responsible for gas exchange between the lung and the blood. As discussed in Part I ( and , “ Flow and ...
Integral Solution for the Mean Flow Profiles of Turbulent Jets, Plumes, and Wakes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Integral methods are used to derive similarity solutions for several quantities of interest including the cross-stream velocity, Reynolds stress, the dominant turbulent kinetic energy production ...
Measurements Within Vortex Cores in a Turbulent Jet
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: High-pass filtering of instantaneous two-dimensional PIV data is employed to educe vortices occurring in the axial plane of a self-similar turbulent axisymmetric jet. An automated method is used ...
Secondary Velocity Fields in the Conducting Airways of the Human Lung
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An understanding of flow and dispersion in the human respiratory airways is necessary to assess the toxicological impact of inhaled particulate matter as well as to optimize the design of ...
Characteristics of Small Vortices in a Turbulent Axisymmetric Jet
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Characteristics of small vortices were studied in axisymmetric jets wherein the Kolmogorov scale was approached by progressively decreasing the Reynolds number while still maintaining turbulent ...
Convective Dispersion During Steady Flow in the Conducting Airways of the Human Lung
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The adverse health effects of inhaled particulate matter from the environment depend on its dispersion, transport, and deposition in the human airways. Similarly, precise targeting of deposition ...
Particle Image Velocimetry Evaluation of a Novel Oscillatory-Flow Flexible Chamber Mixer
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes a novel oscillatory-flow mixer consisting of a pair of flexible chambers connected by a perforated plate, or septum. During operation, the septum undergoes reciprocating ...
Experimental and Numerical Studies of Enhanced Interdigitated Flow Field for PEM Fuel Cells
Publisher: ASCE
Abstract: The presence of blockages in the flow field (FF) of proton exchange membrane fuel cells (PEMFCs) increases the mass transport of reactants toward the catalyst layer regions and improves cell performance. In this paper, the ...