Results 1 to 10 of about 35,029 (280)
Dean Flow Dynamics in Low-Aspect Ratio Spiral Microchannels. [PDF]
Sci Rep, 2017 A 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 ...
Nivedita N, Ligrani P, Papautsky I.
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Numerical investigation of Dean vortex evolution in turbulent flow through 90° pipe bends [PDF]
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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Micromachines, 2023 Microchannels with curved geometries have been employed for many applications in microfluidic devices in the past decades. The Dean vortices generated in such geometries have been manipulated using different methods to enhance the performance of devices ...
Yeganeh Saffar +3 more
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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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Exact solution for the pulsating finite gap Dean flow
Applied Mathematical Modelling, 2007 Analytical solutions of the Navier–Stokes equations for the fully developed laminar flow in a cylindrical annulus, when an oscillating circumferential pressure gradient is imposed (finite gap oscillating Dean flow), are presented.
S Tsangaris
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Dean-Flow Affected Lateral Focusing and Separation of Particles and Cells in Periodically Inhomogeneous Microfluidic Channels [PDF]
Sensors, 2023 The purpose of the recent work is to give a better explanation of how Dean vortices affect lateral focusing, and to understand how cell morphology can alter the focusing position compared to spherical particles.
Anita Bányai +8 more
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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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Geometry-Dependent Efficiency of Dean-Flow Affected Lateral Particle Focusing and Separation in Periodically Inhomogeneous Microfluidic Channels [PDF]
Sensors, 2022 In this study, inertial focusing phenomenon was investigated, which can be used as a passive method for sample preparation and target manipulation in case of particulate suspensions.
Anita Bányai +3 more
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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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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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