Effects of Channel Aspect Ratio, Surface Wettability and Liquid Viscosity on Capillary Flow Through PMMA Sudden Expansion Microchannels

2013 ◽  
Vol 1 (2) ◽  
pp. 139-144 ◽  
Author(s):  
Subhadeep Mukhopadhyay ◽  
J. P. Banerjee ◽  
S. S. Roy
Keyword(s):  
Aspect Ratio ◽  
Capillary Flow ◽  
Surface Wettability ◽  
Sudden Expansion ◽  
Liquid Viscosity ◽  
Channel Aspect Ratio ◽  
Flow Through

Turbulent flow through a plane sudden expansion of modest aspect ratio

2002 ◽  
Vol 14 (10) ◽  
pp. 3641-3654 ◽  
Author(s):  
M. P. Escudier ◽  
P. J. Oliveira ◽  
R. J. Poole
Keyword(s):  
Aspect Ratio ◽  
Turbulent Flow ◽  
Sudden Expansion ◽  
Flow Through

Effect of Aspect Ratio on Overall Thermal Performance of Forced Convective Heat Transfer Utilizing Turbulent Nanofluid Flow

2020 ◽  
pp. 1-22
Author(s):  
Hani Hinnawi ◽  
Abdulnaser Al-abadi ◽  
Naser S. Al-Huniti
Keyword(s):  
Heat Transfer ◽  
Reynolds Number ◽  
Aspect Ratio ◽  
Three Dimensional ◽  
Uniform Heat Flux ◽  
Nanofluid Flow ◽  
Maximum Enhancement ◽  
Channel Aspect Ratio ◽  
Flow Through ◽  
Volume Method

Abstract This work is concerned with studying the performance of SiO2–water nanofluid flow through a three-dimensional straight mini-channel with different values of aspect ratio (AR) of (0.5, 1.0, and 1.6) and a fixed hydraulic diameter under a uniform heat flux. The governing equations are developed and solved numerically using the finite volume method for a single-phase flow with standard Kappa-epsilon (κ–ε) turbulence model via a user-defined function (UDF) over Reynolds number (Re) range of (10,000-35,000). Numerical results indicated that the average Nusselt number ratio increases as Reynolds number and volume concentration of the nanoparticles increase for all values of the channel aspect ratio. The results indicated that the maximum enhancement of the heat transfer coefficient (benefit) achieved is 94.69% at AR=0.5, along with the lowest increase of pressure drop (penalty) of 13.1%. The highest performance evaluation criterion (PEC) of 1.64 is found at AR=0.5, Re=35,000, and 5% concentration.

Effect of aspect ratio on flow through and around a porous disk

2021 ◽  
Vol 6 (7) ◽  
Author(s):  
Tingting Tang ◽  
Jin Xie ◽  
Shimin Yu ◽  
Jianhui Li ◽  
Peng Yu
Keyword(s):  
Aspect Ratio ◽  
Porous Disk ◽  
Flow Through

Biphasic co-flow through a sudden expansion or contraction of a Hele-Shaw channel

2021 ◽  
Vol 6 (7) ◽  
Author(s):  
Boris Y. Rubinstein ◽  
Dana Zusmanovich ◽  
Zhenzhen Li ◽  
Alexander M. Leshansky
Keyword(s):  
Sudden Expansion ◽  
Flow Through
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