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New variables in Formula Editor

With MolFlow 2.3.5, two long-requested features have been added to the expressions that you can use in Formula Editor.

1) Mean Free Path / Mean Pumping Path

Adding the "MFP" or "MPP" variables will display the mean free/pumping path in centimeters, that is, the total length travelled by particles in the system divided by the number of hits / number of absorbed particles.

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2) Sums for selection groups

MolFlow now fully supports defining part of the geometry as selection groups. In the formula editor, it is now possible to refer to a group of facets and perform sum operation on them. The syntax is the following:

sum(prefix,Sn)

where prefix can be:

  • AR (area of facets)
  • A (number of absorbed particles)
  • H (nimber of hits on the facets)
  • D (number of particles desorbed from the facets)

Examples:

  • SUM(A,S3) will calculate the total number of particles absorbed on facets that are part of selection group 3
  • SUM(AR,S1) tells the total area of all facets in selection group 1

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