help Rec137
  ABAQUS fluid cavity volume output to MATLAB
  
  Syntax
      #Rec# = Fil2str('*.fil');
      #out# = Rec137(#Rec#)
 
  Description
      Read fluid cavity volume output from the results (*.fil) file
      generated from the ABAQUS finite element software. The asterisk (*)
      is replaced by the name of the results file. The record key for fluid
      cavity volume output is 137. See section "Results file output format"
      in ABAQUS Analysis User's manual for more details.
      The following options with parameters have to be specified in the
      ABAQUS input file for the results (*.fil) file to be created and to
      contain fluid cavity volume results:
          ...
          *FILE FORMAT, ASCII
          *NODE FILE
          CVOL
          ...
      NOTE: The results file (*.fil) must be placed in the same directory
      with the MATLAB source files in order to be processed.
      
  Input parameters
      #Rec# (string) is an one-row string containing the ASCII code of the
          ABAQUS results (*.fil) file. It is generated by the function
          Fil2str.m.
  
  Output parameters
      #out# ([#n# x 2]) is a double array containing the attributes of
          the record key 137 as follows:
          Column  1  –  Fluid cavity reference node number. 
          Column  2  –  Volume. 
          where #n# is the number of nodes multiplied by the number of
          increments. If the results file does not contain the desired
          output, #out# will be an empty array
 
  _________________________________________________________________________
  Copyright (c) 2016
      George Papazafeiropoulos
      Captain, Infrastructure Engineer, Hellenic Air Force
      Civil Engineer, M.Sc., Ph.D. candidate, NTUA
      Email: gpapazafeiropoulos@yahoo.gr
      Website: http://users.ntua.gr/gpapazaf/