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Fluid dynamics in heart development: effects of hematocrit and trabeculation
(Oxford University Press, 2018-12)
Recent in vivo experiments have illustrated the importance of understanding the haemodynamics of heart morphogenesis. In particular, ventricular trabeculation is governed by a delicate interaction between haemodynamic ...
Uncertainty quantification reveals the physical constraints on pumping by peristaltic hearts
(The Royal Society, 2020-09-09)
Most biological functional systems are complex, and this complexity is a fundamental driver of diversity. Because input parameters interact in complex ways, a holistic understanding of functional systems is key to understanding ...
A semi-automated finite difference mesh creation method for use with immersed boundary software IB2d and IBAMR
(IOP Publishing, 2020-11-27)
Numerous fluid-structure interaction problems in biology have been investigated using the immersed boundary method. The advantage of this method is that complex geometries, e.g., internal or external morphology, can easily ...
IB2d Reloaded: a more powerful Python and MATLAB implementation of the immersed boundary method
(Wiley, 2018-12)
The immersed boundary (IB) method is an elegant way to fully couple the motion of a fluid and deformations of an immersed elastic structure. In that vein, the IB2d software allows for expedited explorations of fluid-structure ...
Vortex dynamics in trabeculated embryonic ventricles
(MDPI, 2019-01-22)
Proper heart morphogenesis requires a delicate balance between hemodynamic forces, myocardial activity, morphogen gradients, and epigenetic signaling, all of which are coupled with genetic regulatory networks. Recently ...
Bifurcations in valveless pumping techniques from a coupled fluid-structure-electrophysiology model in heart development
(2017-12-06)
We explore an embryonic heart model that couples electrophysiology and muscle-force generation to flow induced using a 2𝘋 fluid-structure interaction framework based on the immersed boundary method. The propagation of ...
Three-dimensional low Reynolds number flows near biological filtering and protective layers
(MDPI, 2017-11-13)
Mesoscale filtering and protective layers are replete throughout the natural world. Within the body, arrays of extracellular proteins, microvilli, and cilia can act as both protective layers and mechanosensors. For example, ...