GfsSourceTension

From Gerris

GfsSourceTension adds a surface-tension term to the momentum equations, associated with an interface defined by its volume fraction and curvature.

The syntax in parameter files is:

[ GfsSourceVelocity ] TRACER SIGMA KAPPA

with

TRACER

the name of the variable holding the volume fraction defining the interface (typically a GfsVariableTracerVOF),

SIGMA

the (constant) value of the surface tension coefficient,

KAPPA

the name of the variable holding the curvature of the interface (typically a GfsVariableCurvature).

Examples

• Savart--Plateau--Rayleigh instability of a water column

    SourceTension T 1 K

• Atomisation of a pulsed liquid jet

    SourceTension T 0.00003 K

• Air-water flow around a Series 60 cargo ship

    SourceTension T -3.*(1. - RATIO) Z

• Circular droplet in equilibrium

  SourceTension T 1 K

• Axisymmetric spherical droplet in equilibrium

  SourceTension T 1 K

• Planar capillary waves

  SourceTension T 1 K

• Air-Water capillary wave

  SourceTension T 1 K

• Fluids of different densities

  SourceTension T 1 K

• Pure gravity wave

  SourceTension {} T 45 Y

• Shape oscillation of an inviscid droplet

    SourceTension T 1. K

• Scalings for Plateau--Rayleigh pinchoff

   SourceTension T 1. K

• Sessile drop

    SourceTension T 1. K

• Equilibrium of a droplet suspended in an electric field

    SourceTension T 1 K