An experimental investigation to model wheezing in lungs
AL Gregory, A Agarwal… - Royal Society open …, 2021 - royalsocietypublishing.org
A quarter of the world's population experience wheezing. These sounds have been used for
diagnosis since the time of the Ebers Papyrus (ca 1500 BC). We know that wheezing is a …
diagnosis since the time of the Ebers Papyrus (ca 1500 BC). We know that wheezing is a …
Reduced modelling and global instability of finite-Reynolds-number flow in compliant rectangular channels
X Wang, IC Christov - Journal of Fluid Mechanics, 2022 - cambridge.org
Experiments have shown that flow in compliant microchannels can become unstable at a
much lower Reynolds number than the corresponding flow in a rigid conduit. Therefore, it …
much lower Reynolds number than the corresponding flow in a rigid conduit. Therefore, it …
Unsteady fluid-structure interactions in a soft-walled microchannel: A one-dimensional lubrication model for finite Reynolds number
TC Inamdar, X Wang, IC Christov - Physical Review Fluids, 2020 - APS
We develop a one-dimensional model for the unsteady fluid-structure interaction (FSI)
between a soft-walled microchannel and viscous fluid flow within it. A beam equation, which …
between a soft-walled microchannel and viscous fluid flow within it. A beam equation, which …
Energetics of collapsible channel flow with a nonlinear fluid-beam model
We consider flow along a finite-length collapsible channel driven by a fixed upstream flux,
where a section of one wall of a planar rigid channel is replaced by a plane-strain elastic …
where a section of one wall of a planar rigid channel is replaced by a plane-strain elastic …
Instabilities in flexible channel flow with large external pressure
PS Stewart - Journal of Fluid Mechanics, 2017 - cambridge.org
We examine the stability of laminar high-Reynolds-number flow through an asymmetric
flexible-walled channel driven by a fixed upstream flux and subject to a (large) uniform …
flexible-walled channel driven by a fixed upstream flux and subject to a (large) uniform …
Flow and oscillations in collapsible tubes: Physiological applications and low-dimensional models
TJ Pedley, D Pihler-Puzović - Sadhana, 2015 - Springer
The motivation for this subject comes from physiology: Air-flow in the lungs, where flow
limitation during forced expiration is a consequence of large-airway collapse, and wheezing …
limitation during forced expiration is a consequence of large-airway collapse, and wheezing …
Global stability analysis of flexible channel flow with a hyperelastic wall
We consider the stability of flux-driven flow through a long planar rigid channel, where a
segment of one wall is replaced by a pre-tensioned hyperelastic (neo-Hookean) solid of …
segment of one wall is replaced by a pre-tensioned hyperelastic (neo-Hookean) solid of …
Enhanced effects from tiny flexible in-wall blips and shear flow
L Pruessner, F Smith - Journal of Fluid Mechanics, 2015 - cambridge.org
Fluid motion at high Reynolds number over a flexible in-wall blip (a compliant bump or dip in
an otherwise fixed wall) is considered theoretically for a very short blip buried low inside a …
an otherwise fixed wall) is considered theoretically for a very short blip buried low inside a …
A low-order model for slamming in a flexible-channel flow
In simulations, large-amplitude self-excited oscillations of high-Reynolds-number flow in a
finite-length flexible channel often exhibit vigorous repetitive 'slamming'motion, during which …
finite-length flexible channel often exhibit vigorous repetitive 'slamming'motion, during which …
Self-excited oscillations in a collapsible channel with applications to retinal venous pulsation
PS Stewart, AJE Foss - The ANZIAM Journal, 2019 - cambridge.org
We consider a theoretical model for the flow of Newtonian fluid through a long flexible-
walled channel which is formed from four compliant and rigid compartments arranged …
walled channel which is formed from four compliant and rigid compartments arranged …