Turbulent water flow in a channel at Reτ = 400 laden with 0.25 mm diameter air-bubbles clustered near the wall

2017 ◽  
Vol 29 (6) ◽  
pp. 065101 ◽  
Author(s):  
D. Lakehal ◽  
D. Métrailler ◽  
S. Reboux
Keyword(s):  
Water Flow ◽  
Air Bubbles ◽  
Turbulent Water

scholarly journals Odor Plumes and Animal Navigation in Turbulent Water Flow: A Field Study

1995 ◽  
Vol 188 (2) ◽  
pp. 111-116 ◽  
Author(s):  
R. K. Zimmer-Faust ◽  
C. M. Finelli ◽  
N. D. Pentcheff ◽  
D. S. Wethey
Keyword(s):  
Field Study ◽  
Water Flow ◽  
Animal Navigation ◽  
Odor Plumes ◽  
Turbulent Water

An experimental investigation of heat transfer in a spiral-coil tube with pulsating turbulent water flow

2015 ◽  
Vol 52 (9) ◽  
pp. 1779-1789 ◽  
Author(s):  
H. Ramezani Kharvani ◽  
F. Ilami Doshmanziari ◽  
A. E. Zohir ◽  
D. Jalali-Vahid
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Water Flow ◽  
Spiral Coil ◽  
Turbulent Water

Reduction of the hydrodynamic resistance to turbulent water flow with copolymers of acrylamide, acrylonitrile, and 2-acrylamido-2-methylpropanesulfonic acid

2016 ◽  
Vol 89 (9) ◽  
pp. 1494-1499
Author(s):  
A. I. Nechaev ◽  
I. I. Lebedeva ◽  
O. G. Vasil’eva ◽  
A. S. Chashchukhin ◽  
V. A. Val’tsifer
Keyword(s):  
Water Flow ◽  
Hydrodynamic Resistance ◽  
Turbulent Water

The modification of coherent structure along a waving film by polymer exudation in turbulent water flow

2002 ◽  
Vol 3 ◽  
pp. N10 ◽  
Author(s):  
Yoshimichi Hagiwara ‡ ◽  
Taro Imamura ◽  
Atsushi Taki
Keyword(s):  
Water Flow ◽  
Coherent Structure ◽  
Turbulent Water

scholarly journals Design and Fabrication of Six-Degree of Freedom Piezoresistive Turbulent Water Flow Sensor

2002 ◽  
Vol 11 (4) ◽  
pp. 191-199
Author(s):  
Dzung Viet Dao ◽  
Toshiyuki Toriyama ◽  
John Wells ◽  
Susumu Sugiyama
Keyword(s):  
Water Flow ◽  
Degree Of Freedom ◽  
Flow Sensor ◽  
Six Degree Of Freedom ◽  
Turbulent Water

RANS VOF Simulations of Density-Stratified Air-Water Flow in a 2D Channel

2020 ◽  
Author(s):  
Chandrima Jana Maiti ◽  
Urmila Ghia ◽  
Leonid A. Turkevich
Keyword(s):  
Pressure Gradient ◽  
Water Flow ◽  
Fill Factor ◽  
Reynolds Numbers ◽  
Driving Pressure ◽  
Reynolds Stresses ◽  
Mean Velocity ◽  
Strongly Coupled ◽  
The Common ◽  
Turbulent Water

Abstract We perform RANS-VOF simulation of density-stratified, fully developed air-water flow in a 2D channel. The flow is completely specified by the (common) driving pressure gradient down the channel and by the fill factor (relative height of the heavier phase to the total height of the channel). Varying the pressure gradient and fill factor results in different flow combinations: namely, laminar air/laminar water, turbulent air/laminar water, turbulent air/turbulent water, laminar air/turbulent water. The focus of the study is the near-interface interaction when either or both phases are turbulent. The RANS-VOF equations are solved on a 2D channel with periodic inlet/outlet boundary conditions. For a fixed fill factor, the Reynolds numbers of each phase varies monotonically with driving pressure gradient. However, at fixed pressure gradient, the fluid Reynolds numbers are non-monotonic at high fill factor. This Reynolds number phase diagram is important in understanding the laminar and turbulent regimes of each phase. The mean velocity is axial (down the channel) and exhibits a dip below the free surface whenever one of the phases is turbulent. As expected, the diagonal Reynolds stresses <u’u’>, <v’v’>, are strongly coupled between the phases, however coupling in <u’v’> is less pronounced.

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