GfsVariableTracer

From Gerris

A GfsVariableTracer is an advected scalar quantity which can also change in time due to user-defined source terms.

The syntax in parameter files is:

[ GfsVariable ] {
  cfl = 0.8
  gradient = gfs_center_van_leer_gradient
  scheme = godunov
  ...
}

where the parameter block is optional. The syntax and meaning of the parameters is described in GfsAdvectionParams.

Examples

• B\'enard--von K\'arm\'an Vortex Street for flow around a cylinder at Re=160

  VariableTracer {} T

• Vortex street around a "heated" cylinder

  VariableTracer {} T

• Parallel simulation on four processors

  VariableTracer {} T

• Boussinesq flow generated by a heated cylinder

  VariableTracer T

• Convergence of the Godunov advection scheme

  VariableTracer T { gradient = gfs_center_gradient }

• Time-reversed advection of a VOF concentration

    VariableTracer G

    VariableTracer Tref

• Comparison between the explicit and implicit diffusion schemes

    VariableTracer T { scheme = none }

• Comparison between explicit and implicit diffusion schemes on concentration tracer

    VariableTracer T1 { scheme = none }

• Conservation of diffusive tracer

    VariableTracer T

    VariableTracer Te

• Numerical viscosity for vorticity/streamfunction formulation

  VariableTracer Omega

• Mass conservation

    VariableTracer T1

• Mass conservation with solid boundary

    VariableTracer T1

• Boundary layer on a rotating disk

    VariableTracer W

• Wind-driven stratified lake

    VariableTracer DRHO

• Translation of an hexagon in a uniform flow

  VariableTracer T

• Advection of a cosine bell around the sphere

  VariableTracer T { 
      gradient = gfs_center_gradient 
      cfl = 1
  }

• Creeping Couette flow between cylinders

    VariableTracer T { scheme = none }

• Relaxation of a charge bump

    VariableTracer Rhoe

• Charge relaxation in an axisymmetric insulated conducting column

    VariableTracer Rhoe

• Charge relaxation in a planar cross-section

    GfsVariableTracer Rhoe

• Equilibrium of a droplet suspended in an electric field

    VariableTracer Rhoe

• Gouy-Chapman Debye layer

    VariableTracer Cpos { scheme = none }

    VariableTracer Cneg { scheme = none }