Numerical simulations of bouncing jets Academic Article

abstract

• SummaryBouncing jets are fascinating phenomenon occurring under certain conditions when a jet impinges on a free surface. This effect is observed when the fluid is Newtonian and the jet falls in a bath undergoing a solid motion. It occurs also for nonNewtonian fluids when the jets fall in a vessel at rest containing the same fluid. We investigate numerically the impact of the experimental setting and the rheological properties of the fluid on the onset of the bouncing phenomenon. Our investigations show that the occurrence of a thin lubricating layer of air separating the jet and the rest of the liquid is a key factor for the bouncing of the jet to happen. The numerical technique that is used consists of a projection method for the NavierStokes system coupled with a level set formulation for the representation of the interface. The space approximation is carried out with adaptive finite elements. Adaptive refinement is shown to be very important to capture the thin layer of air that is responsible for the bouncing. Copyright 2015 John Wiley & Sons, Ltd.

authors

• Bonito, Andrea

published proceedings

• INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS

altmetric score

• 1.85

author list (cited authors)

• Bonito, A., Guermond, J., & Lee, S.

citation count

• 22

publication date

• January 2016

publisher

• Wiley  Publisher

keywords

• Adaptive Finite Elements
• Bouncing Jet
• Entropy Viscosity
• Kaye Effect
• Level Set
• Projection Method
• Shear-thinning Viscosity

Digital Object Identifier (DOI)

• 10.1002/fld.4071

start page

• 53

end page

• 75

volume

• 80

issue

• 1

URL

• http://dx.doi.org/10.1002/fld.4071