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$$$$ HRCAV    NOTICE  CHAT      11/09/12    21:16:28     7124           
                                             DATE     11/09/12

     Procedure HRCAV                         Voir aussi : RAYE FFOR HRAYO
     ---------------   
  CHAM1 = HRCAV MRT EMIS TE TRAD (FLOT1) ;
                                                                         

     Description :
     ____________

     This procedure calculates a linearized exchange coefficient for
 the treatment of radiation across a tranparent medium in a cavity.


      Contents :
      _________

     MRT   : radiation model (MMODEL type)

     EMIS  : emissivity field defined on the radiation model
             (MCHAML type)

     TE    : temperature field defined on the cavity
             (MCHAML type)

     TRAD  : temperature computed with the RAYE operator, function
             of the form factors, the emissivity, and the temperature
             field corresponding to a given iteration (preceeding
             field)
             (MCHAML type)

     FLOT1 : Stefan-Boltzmann constant (default value 5.67e-8 Wm-2K-4)
             (FLOTTANT type)
                                                                         
     CHAM1 : exchange coefficient
             (MCHAML type)