VOLUME_correction

This parameter triggers the volume correction due to the ArtificialExpansionOrCompression idea (see also VolumeCorrection), where the computation of the target volume follows the classical inflow-outflow-balance . Default: VOLUME_correction = 0.0 (off) The given value is the maximum allowed corrected volume per time step, relative to the total volume of a chamber. MESHFREE will adjust the divergence of velocity in order to artificially provoke expanding or compressing flow to regain the correct, analytical volume (see ArtificialExpansionOrCompression and in particular the term \( - \left( \nabla^{T}\mathbf{v} \right)^{n+1}_{i,\text{VolCorr}}\) in EnhanceCorrectionPressureFormulation as well as ArtificialPointDisplacement ) We make the Ansatz Hint: V_analytical and V_measured can be interrogated by the real()-Funktion (see %VOLUME_TARGET% and %VOLUME_ACTUAL% ). Note:

• This parameter can also be set chamberwise for multiphase simulations (see also KindOfProblem, CHAMBER). If it is not set for specific chambers, it is automatically set according to the non-chamberwise definition for all chambers. If the volume correction for multiple chambers shall be different, use
  VOLUME_correction = 0.001 VOLUME_correction(3) = 0.01 VOLUME_correction(5) = 0.0
  which sets the correction for all chambers first to 0.001, then it changes the values for chambers 3 and 5.
• This type of global volume correction will be turned off if local volume correction (see VOLUME_correction_local) in conjunction with RepresentativeMassAlgorithm is turned on by RepresentativeMass_iData.
• See VolumeCorrection for more information on volume correction.

IMPORTANT The standard correction procedure is the EnhanceCorrectionPressureFormulation-algorithm. In order to invoke ArtificialPointDisplacement put a 10 in front of the comma, i.e.