A composite cavity model for axisymmetric high Reynolds number separated flow II: Numerical analysis and results

1995 ◽  
Vol 29 (1) ◽  
pp. 63-75
Author(s):  
A. D. Fitt ◽  
P. Wilmott
Keyword(s):  
Reynolds Number ◽  
Numerical Analysis ◽  
High Reynolds Number ◽  
Separated Flow ◽  
Cavity Model ◽  
High Reynolds

S0550204 LES of turbulent-separated flow controlled by DBD plasma actuator at high Reynolds number

2014 ◽  
Vol 2014 (0) ◽  
pp. _S0550204--_S0550204-
Author(s):  
Makoto SATO ◽  
Kengo ASADA ◽  
Taku NONOMURA ◽  
Hikaru AONO ◽  
Aiko YAKENO ◽  
...  
Keyword(s):  
Reynolds Number ◽  
High Reynolds Number ◽  
Separated Flow ◽  
Plasma Actuator ◽  
Dbd Plasma ◽  
High Reynolds ◽  
Turbulent Separated Flow

The rise of a gas bubble in a viscous liquid

1959 ◽  
Vol 6 (1) ◽  
pp. 113-130 ◽  
Author(s):  
D. W. Moore
Keyword(s):  
Reynolds Number ◽  
Velocity Field ◽  
Viscous Liquid ◽  
High Reynolds Number ◽  
Separated Flow ◽  
Gas Bubble ◽  
Bubble Shape ◽  
Spherical Cap ◽  
Spherical Bubbles ◽  
High Reynolds

The rise of a gas bubble in a viscous liquid at high Reynolds number is investigated, it being shown that in this case the irrotational solution for the flow past the bubble gives a uniform approximation to the velocity field. The drag force experienced by the bubble is calculated on this hypothesis and the drag coefficent is found to be 32/R, where R is the Reynolds number (based on diameter) of the bubbles rising motion. This result is shown to be in fair agreement with experiment.The theory is extended to non-spherical bubbles and the relation of the resulting theory, which enables both bubble shape and velocity of rise to be predicted, to experiment is discussed.Finally, an inviscid model of the spherical cap bubble involving separated flow is considered.

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