Model symmetrical models

This task describes the steps to create a symmetric model with tangential elements located at each level along the axis of the model.

  1. Create a symmetric model, with N tangential elements located at each level along the axis of the model, see diagram.
  2. Choose a row of elements and call it the N1 row.
    Each N1 row element must have N–1 other corresponding elements.
  3. Specify with Cards 6h that elements N1, N2, N3,....NN, N1', N2', N3',.... NN', N1'',... etc. are symmetric elements.
    There must be a Card 6h defined for each level, and all the elements of the model must be listed on Cards 6h.
  4. Ensure each Card 6h has exactly N elements on it, and the first element must be an N1 row element.
  5. Calculate all the view factors for each N1 row element with Card 6a VFx1ALL Cards.
    This creates a partial set of view factors, for example, the view factor from N2 to N3 will not be computed.
  6. Allow TMG to automatically create the rest of the symmetric view factors.
  7. If the Card 6g ARCOMB option is specified, create Card 7 Merging Cards to merge elements N1, N2, ...NN into element N1, elements N1', N2', ...NN' into element N1', etc.