Fluids

One can add charged and neutral fields to your simulation by employing the Fluid block. It supports the following three Kind options:

• coldRelFluid
• eulerFluid
• neutralGas

A gasKind must then be specified, either by using a built-in value or by importing data from an external file. An InitialCondition nested block must also be included, as it declares necessary boundary conditions and initial condition parameters.

Below is an example of a fluid being implemented in a simulation:

<Fluid neutralFluid>
  kind = neutralGas
  gasKind = Ar
  <InitialCondition >
    kind = constant
    # Lower and upper bounds with respect to the grid
    lowerBounds = [0 0 0]
    upperBounds = [50 50 50]
    # Here, amplitude refers to the gas density, in kg/m^3
    amplitudes = [1.78]
    components = [0]
  </InitialCondition>
</Fluid>

More details on Fluid and its parameters can be found in the Fluid section of VSim Reference.