Parameter | Description |
Nchar | Integer number of characters in the following character string, less than 132. |
Comment_String | Character string beginning with the blank character or the * character. |
Title_String | Character string beginning with the characters $TITLE: and followed by optional title characters. Maximum length is 80 characters. |
Size_String | Character string beginning with the characters $SIZE: and containing the following data in the (A6,4X,4I10) format: Dimension_Code, Number_Nodes, Number_Enclosures, and Max_Node_ID. |
Dimension_Code Integer code for the dimensionality of the model. 2 ==> 2-D XY space -2 ==> 2-D RZ axisymmetric space 3 ==> 3-D XYZ space | |
Number_Nodes - Integer number of nodes in one symmetric image of the model. | |
Number_Enclosure - Integer number of enclosures in the model, before symmetry operations. | |
Max_Node_ID - Integer largest node ID in the model. | |
Symmetry_String | Character string beginning with the characters $SYM: and followed by the data, Number_Symmetry_Objects, and formatted as (A5,5X,I10). |
Number_Symmetry_Objects - Integer number of symmetry operations for which data will follow. | |
Symmetry_Data | 15 real constants, unformatted, representing the symmetry operation. See the specification for the VFINDAT file for a description of this data. The data is given in column order. |
antisymmetric_ String | Character string containing the characters $ENDSYM: |
Begin_Node_Data String | Character string beginning with the characters $NODES: and followed by the data, Number_Nodes and Symmetry_Multiplier, and formatted as (A7,3X,2I10). |
Symmetry_Multiplier - Integer giving the total number of images of the model after all symmetry operations have been completed, includes the original image. | |
Node_Data_Record | (Node_ID)(XYZ_Coordinates). |
Node_ID - Integer node ID number. | |
XYZ_Coordinates - 3 real constants giving the X, Y, and Z coordinates of the node. For 2-D models, the third number should be zero. For 2D RZ axisymmetric models, the first two coordinates are the R and Z coordinates, respectively. | |
End_Node_Data_ String | Character string containing the characters $ENDNODES. |
Begin_Enclosure_ String | Character string containing the characters $ENCL: and followed by the data, Enclosure_ID, Number_Surfaces, and Symmetry_Multiplier, and formatted as (A6,4X,3I10). |
Enclosure_ID - Integer ID of this enclosure. | |
Number_Surfaces - Integer number of surfaces in this enclosure. | |
Number_User_ID | Integer number of User IDs, or UIDs, which are used in this enclosure and which will follow. |
User_ID | Integer user ID which is used in this enclosure. |
Surface_Data | (SURATT)(SURDAT)(SURNOD)(SURARA)(LFTHND). |
SURATT - 14 Integers, see the description of surface attributes in the VFINDAT file specification. | |
SURDAT - SURATT number four reals, see the description of surface data in the VFINDAT file specification. | |
SURDAT - SURATT number four reals, see the description of surface data in the VFINDAT file specification. | |
SURNOD - SURATT number five integers giving the nodes on this surface and in the order specified for the corresponding Patran Plus elements. | |
SURARA - SURATT number five plus one reals giving the surface area and the nodal subareas for this surface. | |
LFTHND - Logical, true is surface has left handed orientation. | |
Surface_Pair_ Record | (Surface_E_Index)(Surface_F_Index)(Symmetry_Index) (Subdivision_Index)(Number_Subdivision)(Can_See_Flag) |
Surface_E_Index - Integer index to the first surface in the pair. | |
Surface_F_Index - Integer index to the second surface in the pair. | |
Symmetry_Index - Integer index to the symmetric image of the second surface. | |
Subdivision_Index - Integer index to the surface subdivision, not currently used. | |
Number_Subdivision - Integer number of subdivisions of the surface, not currently used. | |
Can_See_Flag - Logical, set true if View_Factor_Data is to follow. | |
If_Can_See | Not a formal item in the VFRAWDAT file. It is used to indicate the number of View_Factor_Data records that should follow. If_Can_See is set to one if Can_See_Flag is true and set to zero otherwise. |
View_Factor_Data | [ (Nodal_Can_See)(Nodal_View_Factor). (Nodal_Mean_Beam_Length). ]*Number_Nodes_Surface_E. ]*Number_Nodes_Surface_F. |
Nodal_Can_See - Logical that node on surface E can see node on surface F. | |
Nodal_View_Factor - Real value of the viewfactor from nodal subarea on surface E to nodal subarea on surface F. | |
Nodal_Mean_Beam_Length - Real value of the mean beam length from nodal subarea on surface E to nodal subarea on surface F. | |
Number_Nodes_Surface_E - SURATT number five for surface E. | |
Number_Nodes_Surface_F - SURATT number five for surface F. | |
Upper_Number_ Surfaces | Number_Surfaces minus the current outer repeat structure index minus one. This provides the upper triangular portion of the surface pair matrix as the part for which the VFRAWDAT file contains data. |
Sum_View_Factor_ Data | (SUMSUR)(SUMONE)(SUMZRO)(SUMNOD). |
SUMSUR - Real value containing the sum of the viewfactors from this surface to all other surfaces in this enclosure. | |
SUMONE - Real value equal to one minus SUMSUR. | |
SUMZRO - Real value containing the sum of all viewfactors from this surface to all other surfaces which were set to zero by virtue of being less than the zero cutoff value. | |
SUMNOD 7- [Real value containing the sum of the viewfactors from this nodal subarea on surface E to all other nodal subareas on all other surfaces in this enclosure]*. Number_Nodes_Surface_E. | |
End_Enclosure_ String | Character string containing the characters $ENDENCL: |
End_File_String | Character string containing the characters $EOF: |
EOF | FORTRAN ENDFILE marker. |
Character | FORTRAN CHARACTER*(*) Type with length less than 132 characters. |
Logical | FORTRAN default LOGICAL Type. |
Integer | FORTRAN default INTEGER Type. |
Real | FORTRAN default REAL Type. |