scholarly journals Vortex Motion of Transitional Swirling Flows in a Rectangular Channel

2001 ◽  
Vol 21 (5) ◽  
pp. 79-85
Author(s):  
Kazuyoshi MATSUZAKI ◽  
Mizue MUNEKATA ◽  
Hideki OHBA
Keyword(s):  
Rectangular Channel ◽  
Vortex Motion ◽  
Swirling Flows

Effects of Cross-Section Geometry of Capillary on the Evaporation From the Meniscus

2005 ◽  
Author(s):  
Songwan Jin ◽  
Choonghyo Choi ◽  
Kenneth S. Breuer ◽  
Jung Yul Yoo
Keyword(s):  
Surface Tension ◽  
Cross Section ◽  
Evaporation Rate ◽  
Rectangular Channel ◽  
Vortex Motion ◽  
Meniscus Shape ◽  
Four Corners ◽  
The Difference ◽  
Circular Capillary ◽  
Cross Section Geometry

Effects of cross-section geometry of capillary on the evaporation from the meniscus have been investigated by adopting several circular and rectangular capillaries. The evaporating meniscus shape, evaporation rate and flow near the evaporating meniscus of various liquids such as water, ethanol and methanol are determined. The shapes of water and ethanol menisci in circular capillary are quite different from each other due to the difference in surface tension. But the difference in meniscus shapes is relatively small in rectangular channel. The averaged evaporation fluxes in rectangular channel are much larger than that in circular capillary. The rotating vortex motion is observed near the evaporating menisci of ethanol and methanol except for the case of methanol in 200 × 20-μm capillary. The reason for this is considered to be the existence of the corner menisci at the four corners.

Large Eddy Simulation of Swirling Flows in a Rectangular Channel

2000 ◽  
Vol 2000 (0) ◽  
pp. 255
Author(s):  
Kazuyoshi MATSUZAKI ◽  
Mizue MUNEKATA ◽  
Yasutake HARAMOTO ◽  
Hideki OHBA
Keyword(s):  
Large Eddy Simulation ◽  
Rectangular Channel ◽  
Swirling Flows ◽  
Eddy Simulation ◽  
Large Eddy

scholarly journals Numerical Analysis of Gravitational Vortex Chamber

2021 ◽  
Vol 3 (10) ◽  
pp. 11-22
Author(s):  
Shahadat Hossain Zehad ◽  
Sadman Al Faiyaz ◽  
Md. Redwan Islam ◽  
Dr. -Ing. Irfan Ahmed
Keyword(s):  
Rectangular Channel ◽  
Vortex Motion ◽  
Vortex Chamber ◽  
Pressure Curve ◽  
Vortex Generation ◽  
Wall Function ◽  
Cylindrical Chamber ◽  
Streamline Flow ◽  
Fine Mesh ◽  
Cad Modelling

A rotating mass of fluid is known as vortex and the motion of the rotating mass of fluid is known as vortex motion. Vorticity is the circulation per unit area. In this research simulation of a vortex chamber is to be carried out in ANSYS CFD taking water as fluid domain for generating a water vortex that is capable enough to move a turbine for electricity generation. The CAD modelling of the setup was set down and simulation was done in fine mesh by taking suitable wall function in the model of a cylindrical chamber along with a rectangular channel with a contraction portion at the end of it where good amount of vortex generation was acquired by observing velocity and pressure by setting different parameters. The results shows the pressure and velocity contours with 3D velocity streamline flow and the curve of the velocity and pressure curve shows the decrease of pressure and increase of velocity from inlet to outlet that leads to a decent vortex generation.

Power Fluctuations in Turbulent Swirling Flows

1996 ◽  
Vol 6 (7) ◽  
pp. 1099-1110 ◽  
Author(s):  
R. Labbé ◽  
J.-F. Pinton ◽  
S. Fauve
Keyword(s):  
Swirling Flows ◽  
Power Fluctuations

On the Exact Soliton Solutions of Some Nonlinear PDE by Tan-Cot Method

2018 ◽  
Vol 5 (1) ◽  
pp. 31-36
Author(s):  
Md Monirul Islam ◽  
Muztuba Ahbab ◽  
Md Robiul Islam ◽  
Md Humayun Kabir
Keyword(s):  
Solitary Wave ◽  
Acoustic Waves ◽  
Water Waves ◽  
Wave Equations ◽  
Rectangular Channel ◽  
Soliton Solutions ◽  
Boussinesq Equations ◽  
Travelling Wave ◽  
Ion Acoustic Waves ◽  
Analytical System

For many solitary wave applications, various approximate models have been proposed. Certainly, the most famous solitary wave equations are the K-dV, BBM and Boussinesq equations. The K-dV equation was originally derived to describe shallow water waves in a rectangular channel. Surprisingly, the equation also models ion-acoustic waves and magneto-hydrodynamic waves in plasmas, waves in elastic rods, equatorial planetary waves, acoustic waves on a crystal lattice, and more. If we describe all of the above situation, we must be needed a solution function of their governing equations. The Tan-cot method is applied to obtain exact travelling wave solutions to the generalized Korteweg-de Vries (gK-dV) equation and generalized Benjamin-Bona- Mahony (BBM) equation which are important equations to evaluate wide variety of physical applications. In this paper we described the soliton behavior of gK-dV and BBM equations by analytical system especially using Tan-cot method and shown in graphically. GUB JOURNAL OF SCIENCE AND ENGINEERING, Vol 5(1), Dec 2018 P 31-36

Enhancement of Heat Transfer in a Short Rectangular Channel with Substantial Deflection of Inlet Velocity from Axial Direction

2005 ◽  
Vol 36 (4) ◽  
pp. 311-318 ◽  
Author(s):  
R. Bunker ◽  
M. YA. Belen'kii ◽  
M. A. Gotovskii ◽  
B. S. Fokin ◽  
S. A. Isaev
Keyword(s):  
Heat Transfer ◽  
Rectangular Channel ◽  
Axial Direction ◽  
Enhancement Of Heat Transfer ◽  
Inlet Velocity
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