Results 1 to 10 of about 5,476,839 (177)
Transient Dean flow in an annulus: a semi-analytical approach [PDF]
Journal of Taibah University for Science, 2019 The mathematical model of a fully developed laminar transient flow formation between the gaps of two horizontally stationary concentric tubes forming concentric annulus due to the impact of sudden application of azimuthal pressure gradient is analysed ...
Basant Kumar Jha, Jibrin Danjuma Yahaya
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Dean Flow Dynamics in Low-Aspect Ratio Spiral Microchannels. [PDF]
Sci Rep, 2017 AbstractA wide range of microfluidic cell-sorting devices has emerged in recent years, based on both passive and active methods of separation. Curvilinear channel geometries are often used in these systems due to presence of secondary flows, which can provide high throughput and sorting efficiency.
Nivedita N, Ligrani P, Papautsky I.
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Dean flow velocity of viscoelastic fluids in curved microchannels [PDF]
AIP Advances, 2020 Curved microchannels take advantage of inertial and Dean drag forces to achieve size-based separation of particles and cells. Despite the reported numerical and experimental correlations for Dean velocity (VDe) of Newtonian fluids, comprehensive studies ...
Arsalan Nikdoost, Pouya Rezai
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Semi-Empirical Estimation of Dean Flow Velocity in Curved Microchannels. [PDF]
Sci Rep, 2017 AbstractCurved and spiral microfluidic channels are widely used in particle and cell sorting applications. However, the average Dean velocity of secondary vortices which is an important design parameter in these devices cannot be estimated precisely with the current knowledge in the field.
Bayat P, Rezai P.
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Dean flow-coupled inertial focusing in curved channels. [PDF]
Biomicrofluidics, 2014 Passive particle focusing based on inertial microfluidics was recently introduced as a high-throughput alternative to active focusing methods that require an external force field to manipulate particles. In inertial microfluidics, dominant inertial forces cause particles to move across streamlines and occupy equilibrium positions along the faces of ...
Ramachandraiah H +6 more
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Fluids, 2018 The dynamics of a spherical particle in an asymmetric serpentine is studied by finite element method (FEM) simulations in a physically unconstrained system.
Eric Pedrol +3 more
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Numerical investigation of Dean vortex evolution in turbulent flow through 90° pipe bends
Frontiers in Mechanical EngineeringThe current study focuses on numerically simulating turbulent flow in a 90° pipe bend using the k-ε turbulence model. Following validation of present numerical approach against prior experimental findings, extensive research was conducted to elucidate ...
Prasun Dutta +5 more
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Results in Engineering, 2020 This paper investigates time-dependent Dean Flow of an incompressible fluid under homogeneous slip, non-homogeneous slip, and no-slip boundary conditions. The fluid flow is due to the sudden application of an azimuthal pressure gradient.
Basant Kumar Jha, Yahaya Jibrin Danjuma
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A needle tip CCEA microfluidic device based on enhanced Dean flow for cell washing. [PDF]
Microsyst Nanoeng, 2021 Particle/cell washing is an essential technique in biological and clinical manipulations. Herein, we propose a novel circular contraction–expansion array (CCEA) microdevice. It can be directly connected to a needle tip without connection tubes. Its small
Shi X, Tan W, Lu Y, Cao W, Zhu G.
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Two Semi-Analytical Methods Applied to Hydrodynamic Stability of Dean Flow
Journal of Applied Fluid Mechanics, 2018 Hydrodynamic stability of Dean flow is studied using two semi-analytical methods of differential transform method (DTM) and Homotopy perturbation method (HPM).
H. Nowruzi +2 more
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