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Dean Flow Velocity of Shear Thickening SiO2 Nanofluids in Curved Microchannels
The Physics of Fluids, 2022We report the effects of a curvilinear microchannel width, height, and radius of curvature, as well as the kinematic viscosity and axial velocity of shear-thickening nanofluids, on the average Dean velocity ( VDe) of the secondary flow in the ...
A. Nikdoost, P. Rezai
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Physics of Fluids A: Fluid Dynamics, 1991
The idea of combining large vortical structures in the flow with the dynamical behavior of open systems to enhance heat transfer and mixing has led to the design and construction of an experimental apparatus to study order breaking in such systems.
LEGUER, Y, PEERHOSSAINI, H
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The idea of combining large vortical structures in the flow with the dynamical behavior of open systems to enhance heat transfer and mixing has led to the design and construction of an experimental apparatus to study order breaking in such systems.
LEGUER, Y, PEERHOSSAINI, H
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, 2021
In this paper, an Eulerian-Lagrangian simulation was conducted to achieve optimal Expanded-Contracted Cavity Arrays microchannel. First, a new code was developed to solve the viscoelastic flow field, and then the particles were solved by adding ...
A. Mahboubidoust, A. Ramiar, K. Sedighi
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In this paper, an Eulerian-Lagrangian simulation was conducted to achieve optimal Expanded-Contracted Cavity Arrays microchannel. First, a new code was developed to solve the viscoelastic flow field, and then the particles were solved by adding ...
A. Mahboubidoust, A. Ramiar, K. Sedighi
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Stability of Couette flow and Dean flow in micropolar fluids
International Journal of Engineering Science, 1985In this article, we have investigated the onset of instability in the flow of the micropolar fluid between two rotating concentric cylinders and the flow in a curved channel, under small gap approximation. The solution of the eigenvalue problems, governing the onset of instability, are obtained by using the shooting method.
Sastry, V. U. K., Das, Tapasi
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Three-dimensional instability of a two-layer Dean flow
Physics of Fluids, 2001Stability of a two-layer Dean flow in a cylindrical annulus with respect to three-dimensional perturbations is studied by a global Galerkin method. It is shown that for large inner radius of the annulus (i) the instability becomes three-dimensional if one of the fluid layers is thin, (ii) its onset is not affected by possible small deformations of the ...
Gelfgat, Alexander Yu. +2 more
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The Dean Effect: An Aortic Arch Flow Artifact Mimicking Dissection
Radiology: Cardiothoracic Imaging, 2022The unique hemodynamics of the aortic arch create conditions for potential formation of a flow-related artifact that mimics disease on CT angiographic images. The hemodynamic basis for this artifact can be explained by fluid mechanics incorporating a mathematical principle known as the Dean number. Therefore, in this review, the artifact is referred to
Alan Ropp +3 more
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On the transition of transient growth mechanism in Taylor–Dean flow
Modern Physics Letters B, 2021We investigate optimal perturbation and its transient growth characteristics in Taylor–Dean flow theoretically. The parameter [Formula: see text], accounting for the ratio of average pumping velocity induced by azimuthal pressure gradient to rotating velocity by rotating cylinders, is varied from −5 to 5.
Cheng Chen, Liu Zhang, Wei Zhang
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Dean vortices in turbulent flows: rocking or rolling?
Journal of Visualization, 2011Flows in pipe bends have been studied extensively over the last decades due to their occurrence both in the human respiratory and blood systems as well as in many technical applications.
Athanasia Kalpakli +2 more
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Analytical Chemistry
Extracellular vesicles (EVs) play a crucial role in mediating and regulating biological processes, such as intercellular communication and signaling. The isolation and purification of EVs from biological samples are prerequisites for EV research. Herein,
Yang Song +4 more
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Extracellular vesicles (EVs) play a crucial role in mediating and regulating biological processes, such as intercellular communication and signaling. The isolation and purification of EVs from biological samples are prerequisites for EV research. Herein,
Yang Song +4 more
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Simulating turbulent Dean flow in Cartesian coordinates
International Journal for Numerical Methods in Fluids, 2008AbstractA simplified approach to simulate turbulent flows in curved channels is proposed. A set of governing equations of motion in Cartesian coordinates is derived from the full Navier–Stokes equations in cylindrical coordinates. Terms to first order in the dimensionless curvature parameter are retained, whereas higher‐order terms are neglected.
El Khoury, George K. +2 more
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