scholarly journals NUMERICAL STUDY ON THE FORMATION OF LOW-WATER COURSE IN A STRAIGHT CHANNEL WITH ALTERNATE BARS

2004 ◽  
Vol 48 ◽  
pp. 1027-1032 ◽  
Author(s):  
Yoshihiko SHIMIZU ◽  
Kengo OSADA ◽  
Tomoko TAKANASHI
Keyword(s):  
Numerical Study ◽  
Straight Channel ◽  
Alternate Bars

scholarly journals Numerical Study of Alternate Bars in Alluvial Channels With Nonuniform Sediment

2019 ◽  
Vol 55 (4) ◽  
pp. 2976-3003 ◽  
Author(s):  
F. Cordier ◽  
P. Tassi ◽  
N. Claude ◽  
A. Crosato ◽  
S. Rodrigues ◽  
...  
Keyword(s):  
Numerical Study ◽  
Alluvial Channels ◽  
Nonuniform Sediment ◽  
Alternate Bars

Numerical Study of Droplet Behavior in Straight and L-Shaped Channels

2007 ◽  
Author(s):  
Chang-Wei Kang ◽  
Jinsong Hua ◽  
Jing Lou
Keyword(s):  
Reynolds Number ◽  
Equilibrium Position ◽  
Numerical Study ◽  
Density Ratio ◽  
Three Dimensional ◽  
Initial Position ◽  
Straight Channel ◽  
Front Tracking Method ◽  
Droplet Behavior ◽  
Two Parameters

Numerical simulations using three-dimensional front tracking method are conducted to study the effects of droplet properties on the transient motion, rotation and deformation of a droplet during its transit in straight and L-shaped rectangular channels. The properties under investigation for straight channel are the density ratio, viscosity ratio, Reynolds number, Weber number and droplet initial position. The latter two parameters are chosen for the study of L-shaped channel. The results show that in the straight channel, despite the droplet initial positions, the droplet with the same properties ends up at the same equilibrium position. However, when the Reynolds number increases, the droplet is heavier or less viscous or droplet becomes more deformable, the droplet equilibrium position is much closer to the wall. Also, heavier or less viscous droplet exhibits higher rotational speed, which is believed to enhance oscillatory motion. As for the L-shaped channel, it is found that the droplet deformability can help to avoid the droplet from impacting upon the channel wall.

scholarly journals Numerical study on a novel hyperbolic inlet header in straight-channel printed circuit heat exchanger

2019 ◽  
Vol 146 ◽  
pp. 805-814 ◽  
Author(s):  
Wen-xiao Chu ◽  
Katrine Bennett ◽  
Jie Cheng ◽  
Yi-tung Chen ◽  
Qiu-wang Wang
Keyword(s):  
Heat Exchanger ◽  
Numerical Study ◽  
Straight Channel ◽  
Printed Circuit

Numerical Study of Fluid Mixing in a Microchannel with a Circular Chamber on a Rotating Disk

2012 ◽  
Vol 542-543 ◽  
pp. 1113-1119 ◽  
Author(s):  
Huan Chao Chiu ◽  
Jerry M Chen
Keyword(s):  
Rotational Speed ◽  
Numerical Study ◽  
Rotating Disk ◽  
Transverse Flow ◽  
Fluid Mixing ◽  
Mixing Efficiency ◽  
Straight Channel ◽  
Lower Range ◽  
Speed Range ◽  
Flat Distribution

This paper reports numerical simulations of fluid mixing in a rotating microchannel with a microchamber fabricated on a CD-like substrate. The sample fluids are driven by the centrifugal force and brought in contact at a Y-shaped junction, and then the mixing flow moves through a straight channel with a circular chamber where the main course of mixing takes place. The CD-like micromixer is rotated clockwise at speeds ranging from 300 to1200 rpm. With increasing rotational speed, the mixing efficiency is found dropping in the lower range (≤ 540 rpm), where the diffusion still dominates the mixing, and then grows progressively to reach as much as 90%. The progressively growth in the higher speed range significantly improves the slightly descending and flat distribution for a straight mixing channel without a circular chamber. This significant enhancement of mixing is due mainly to the vortices generated in the circular chamber and the strong transverse flow induced by the Coriolis force.

Numerical study of the low-frequency atomic dynamics in a Lennard-Jones glass

1998 ◽  
Vol 77 (2) ◽  
pp. 473-484 ◽  
Author(s):  
M. Sampoli, P. Benassi, R. Dell'Anna,
Keyword(s):  
Numerical Study ◽  
Low Frequency ◽  
Lennard Jones
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