.TRANSFORM.Utilities.CharacteristicNumbers.DiffusiveMassTimeConstant

Information

Defined to be the approximate time for a thermal wave to penetrate distant L.

• tau = L^2/(4*alpha_d)

Interface

function DiffusiveMassTimeConstant
  extends Modelica.Icons.Function;
  input SI.DiffusionCoefficient D_ab "Diffusion coefficient";
  input SI.Length L "Characteristic length";
  output SI.Time tau "Diffusive mass transfer time constant";
end DiffusiveMassTimeConstant;