The Splitting of Drops and Bubbles by Turbulent Fluid Flow

1973 ◽  
Vol 95 (1) ◽  
pp. 53-60 ◽  
Author(s):  
M. Sevik ◽  
S. H. Park
Keyword(s):  
Reynolds Number ◽  
Weber Number ◽  
High Reynolds Number ◽  
Air Bubbles ◽  
Immiscible Liquids ◽  
Turbulent Fluid Flow ◽  
Liquid Drops ◽  
A Value ◽  
Critical Weber Number ◽  
High Reynolds

The work of Hinze concerned with the splitting of drops and bubbles by turbulent flow has been extended. In particular, the breakup of air bubbles in the adjustment region of a high Reynolds number water jet has been observed. A critical Weber number of 1.3 was obtained from these experiments, whereas Hinze calculated a value of 0.59 based on tests involving the dispersion of various immiscible liquids. It was found that both Weber numbers could be predicted theoretically by considering the resonances of the liquid drops or gas bubbles.

scholarly journals Experiments on the flow past a circular cylinder at very high Reynolds number

1961 ◽  
Vol 10 (3) ◽  
pp. 345-356 ◽  
Author(s):  
Anatol Roshko
Keyword(s):  
Reynolds Number ◽  
Wind Tunnel ◽  
Circular Cylinder ◽  
Drag Coefficient ◽  
Vortex Shedding ◽  
High Reynolds Number ◽  
Reynolds Numbers ◽  
A Value ◽  
High Reynolds ◽  
Very High

Measurements on a large circular cylinder in a pressurized wind tunnel at Reynolds numbers from 106 to 107 reveal a high Reynolds number transition in which the drag coefficient increases from its low supercritical value to a value 0.7 at R = 3.5 × 106 and then becomes constant. Also, for R > 3.5 × 106, definite vortex shedding occurs, with Strouhal number 0.27.

High-Speed Visualization of Bubbles Interacting With a Solid Surface

2006 ◽  
Author(s):  
Suleman Khoja ◽  
Daniel Attinger
Keyword(s):  
Solid Surface ◽  
Weber Number ◽  
High Speed ◽  
High Reynolds Number ◽  
Solid Wall ◽  
Experimental Setup ◽  
Air Bubbles ◽  
Bubble Wall ◽  
Turbulent Drag ◽  
High Reynolds

Bubbles around a solid surface moving in a fluid at high Reynolds number drastically reduce the associated turbulent drag. In this paper, we present experiments on the interaction of air bubbles with a solid wall. The design of an experimental setup is described, that allows generating bubbles with diameters of 0.4 to 2 mm and observes their interaction with a solid wall whose angle with the horizontal can be controlled. Depending on the bubble size and angle of inclination of the solid wall, the bubbles bounce off or slide along the wall. High-speed visualizations of the bubble-wall interactions are performed for values of Reynolds and Weber number ranging from 40 to 560 and 0.04 to 1.80 respectively. Our experimental results are compared with the work of Tsao and Koch [Physics Fluids 9, 44 (1997)].

Modeling and Simulation of High Reynolds' Number Flows During Reaction Injection Mold Filling

1994 ◽  
Vol 9 (3) ◽  
pp. 279-285 ◽  
Author(s):  
Rahima K. Mohammed ◽  
Tim A. Osswald ◽  
Timothy J. Spiegelhoff ◽  
Esther M. Sun
Keyword(s):  
Reynolds Number ◽  
Modeling And Simulation ◽  
High Reynolds Number ◽  
Mold Filling ◽  
Injection Mold ◽  
High Reynolds ◽  
Reynolds Number Flows
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