Formation and Penetration of Vortex Ring on Drop Coalescence

2016 ◽  
Author(s):  
Hiranya Deka ◽  
Gautam Biswas ◽  
Amaresh Dalal
Keyword(s):  
Numerical Simulations ◽  
Vortex Ring ◽  
Impact Velocity ◽  
Level Set ◽  
Volume Of Fluid ◽  
Liquid Pool ◽  
Drop Coalescence

Numerical simulations are performed using coupled level-set and volume of fluid (CLSVOF) method to capture the formation and propagation of a vortex ring when a drop coalesces at the interface of a pool of same liquid and a lighter liquid resting above it. A Vortex ring is generated near the interface on coalescence of a drop. Subsequently the vortex ring propagates into the liquid pool. The propagation of a vortex ring and its dependence on the shape as well as impact velocity of the drop are investigated in this work.

Vortex Ring Formation on Drop Coalescence With Underlying Liquid

2013 ◽  
Author(s):  
Bahni Ray ◽  
Gautam Biswas ◽  
Ashutosh Sharma
Keyword(s):  
Numerical Simulations ◽  
Vortex Ring ◽  
Level Set ◽  
Flat Surface ◽  
Volume Of Fluid ◽  
Ring Formation ◽  
Vortex Rings ◽  
Drop Coalescence ◽  
Vortex Ring Formation ◽  
To Come

Numerical simulations using coupled level-set and volume-of-fluid (CLSVOF) method has been carried out to capture the vortex ring when a drop coalesces on a pool of liquid. A study has been done for the formation and motion of vortex rings generated when drops of liquid are allowed to come into contact at zero velocity with a quiescent flat surface of the same liquid.

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