Card 6g - Symmetric View Factors Request

This optional card sets the view factor merging flags for geometrically symmetric models.

Parameters: L, KODE

A combination of Cards 6g, Card 6h, Card 6o, and Card 6a VFx1ALL Cards may be used to calculate view factors for geometrically symmetric models more efficiently, by taking into account the model's symmetry. Card 6g sets the view factor merging flags.

L

L is the code SYMVREQ (or 15).

KODE

KODE is the symmetric view factor merging flag.

  • KODE = ARCOMB (or 1) merges the view factors and areas of the symmetric elements. This option should be used if all the boundary conditions and the calculated temperatures are also expected to be symmetrical. The symmetric elements defined on Card 6h - Symmetric Elements List should also be merged with Card 7 - Element Merging and Renumbering.
  • KODE = REST (or 3) creates the remaining view factors of the model with no view factor merging. This option should be used if the calculated temperatures are not expected to be symmetrical.

Code example


 SYMVREQ ARCOMB     
 $ SYMMETRIC VIEW FACTORS WITH ELEMENT MERGING
 SYMNODES 11 12 13 14
 $ N1 ELEMENT IS 11, 11,12,13,14 ARE SYMMETRIC
 SYMNODES 21 22 23 24
 $ N1 ELEMENT IS 21, 21,22,23,24 ARE SYMMETRIC
 VFS1ALL 11         
 VFS1ALL 21
 $ VIEW FACTORS FOR N1 ELEMENTS ARE CALCULATED