Dimensionality

This subsection is used to automatically rescale the physical properties of a simulation for cases in which the fundamental dimensions (length, time, mass, temperature) that are used are not in SI units but the physical properties (e.g. thermal conductivity) are known in SI units.

subsection dimensionality
  set length      = 1 #meter
  set mass        = 1 #kilogramm
  set time        = 1 #second
  set temperature = 1 #Kelvin
end

length, mass, time and temperature are the fundamental dimensions that may be required. By default, it is assumed that SI units are used. For example, if a mesh is made in millimeters, such that a height of \(0.100`m is :math:`100\) in the mesh file, but the user still wishes to specify the viscosity in \(m^2/s\), the user can set length=0.001 to automatically rescale the physical properties.