Results 181 to 190 of about 1,150 (206)

Flow visualization of Dean vortices in a curved channel with 40 to 1 aspect ratio

The Physics of Fluids, 1988
Results from a flow visualization study of Dean vortex flow are presented. These were obtained over a range of Dean numbers from 40 to 220 using a transparent channel with mild curvature, an aspect ratio of 40 to 1, and an inner to outer radius ratio of 0.979.
P. M. Ligrani, R. D. Niver
openaire   +1 more source

Large-eddy simulation of low frequency oscillations of the Dean vortices in turbulent pipe bend flows

Physics of Fluids, 2005
Large-eddy simulations are performed to investigate turbulent flows through 90° pipe bends that feature unsteady flow separation, unstable shear layers, and an oscillation of the Dean vortices. Single bends with curvature radii of one- and three-pipe diameters are considered at the Reynolds number range 5000–27 000.
Rütten, F., Schröder, Wolfgang, Meinke, Matthias   +2 more
openaire   +2 more sources

Three-dimensional hydrodynamic flow and particle focusing using four vortices Dean flow

Microfluidics and Nanofluidics, 2014
We present a three-dimensional (3D) hydrodynamic focusing device built on a single-layer platform using single sheath flow. Despite the simple structure and operation, the device not only achieves narrow focusing of a sample fluid or particles but also switches the cross-sectional size and lateral position of the sample stream.
Byung Hang Ha, Kang Soo Lee, Jin Ho Jung, Hyung Jin Sung   +3 more
openaire   +1 more source

Dean vortices with wall flux in a curved channel membrane system: 2. The velocity field

AIChE Journal, 1996
AbstractThe velocity and pressure fields and the effect of wall flux on these fields in a spiral channel are presented. As fluid flows inward through a spiral channel with constant gap and permeable walls, the streamwise flux decreases while the curvature increases. Thus, by balancing the stabilizing effect of wall suction with the destabilizing effect
Kun Yong Chung, Mary E. Brewster, Georges Belfort   +2 more
openaire   +1 more source

FINITE ELEMENT ANALYSIS OF HEAT TRANSFER AND DEAN VORTICES OF RECTANGULAR CORRUGATED MICROCHANNEL

Heat Transfer Research
In order to develop a rectangular corrugated microchannel (RCM) heat sink with high heat transfer and low pressure drop, a rectangular corrugated microchannel is designed and simulated, and then the effects of amplitude <i>A</i>, wavelength <i>&lambda;</i>, and inlet flow velocity <i>u_in</i>
Zhanshu He, Saifei Ding, Beibei Cui, Huang Shentu, Jinlong Yu, Xiaohang Wang, Xianghui Liu   +6 more
openaire   +1 more source

Structural characteristics of dean vortices in a curved channel.

2012
NA
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DEVELOPING LENGTHS IN WOVEN AND HELICAL HOLLOW TUBES FOR DEAN VORTICES FLOWS

2009
International ...
Moulin, Philippe, Springer, Fanny, Carretier, Emilie, Veyret, Damien   +3 more
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Investigation of a novel serpentine micromixer based on Dean flow and separation vortices

Meccanica, 2022
Zahra Babaie, Dariush Bahrami, Morteza Bayareh   +2 more
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Enhancement of gas-liquid mass transfer in curved membrane contactors with the generation of dean vortices

Journal of Membrane Science, 2021
Yiwei Fan, Jisong Zhang
exaly  

The development and structural characteristics of Dean vortices in a curved rectangular channel

2012
Lieutenant, United States ...
openaire   +1 more source