# MassedParticleParameters

class `cee.ug.``MassedParticleParameters`()

  Parameters for Massed Particle Traces.

  If these parameters are specified in the `ParticleTraceGroup.massedParticleParameters` property, the particle trace will be computed based on a massed particle formulation using the given parameters.

  To compute normal steam lines (massless particles), set `ParticleTraceGroup.massedParticleParameters` to undefined (this is the default setting).

Properties

- `constantFluidDensity`
- `constantFluidViscosity`
- `density`
- `fluidDensityResultId`
- `fluidViscosityResultId`
- `gravity`
- `radius`
- `restitutionCoefficient`

## Properties

`MassedParticleParameters.``constantFluidDensity`

  Type: | number

  The constant fluid density to use if the fluidDensityResultId is not set (-1)

`MassedParticleParameters.``constantFluidViscosity`

  Type: | number

  The constant fluid viscosity to use if the fluidViscosityResultId is not set (-1)

`MassedParticleParameters.``density`

  Type: | number

  Particle density

`MassedParticleParameters.``fluidDensityResultId`

  Type: | number

  ID of scalar result for fluid density

`MassedParticleParameters.``fluidViscosityResultId`

  Type: | number

  ID of scalar result for fluid molecular viscosity

`MassedParticleParameters.``gravity`

  Type: | Vec3Like

  Gravity (e.g. <0,0,-9.81> for normal earth gravity if in SI system)

`MassedParticleParameters.``radius`

  Type: | number

  Particle radius

`MassedParticleParameters.``restitutionCoefficient`

  Type: | number optional

  Coefficient of restitution _(Currently not in use)_

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