Manual pages | Cast3M

$$$$ RAYE     NOTICE  CHAT      11/09/12    21:17:50     7124           
                                             DATE     11/09/12

     Operateur RAYE                          Voir aussi : MODE FFOR RAYN
     --------------                                                HRCAV CAV HRC   
 
      CH2 = RAYE  MODL1   CHAM1 CHAM2  ;
  ou
      CH2 = RAYE  MODL1   CHAM1 CHAM2 CHAM3  (PREC) ('TABS' VAL);
                                                                         

     Description :
     ____________

     This operator is used in the modelisation of radiative heat
  transfer in a cavity across a transparent medium or across
  a participating medium at a uniform temperature.
     It calculates:
 - or the radiation matrix R :
                    Phi = R.T**4
 - or the temperature field Trad corresponding to the temperature
   field T for a given iteration :
             Phi = emis * stefan * (T**4 - Trad**4)

            (Phi: radiative flux, emis: emissivity)

      Contents :
      _________

     MODL1 : modeled structure (MMODEL type)

     CHAM1 : view factors matrix (MCHAML type)

     CHAM2 : emissivity field (MCHAML type)

     CHAM3 : temperature field (MCHAML type)

     PREC  : precision corresponding to the iterative calculation
             of the radiosity field (type flottant)
             (default value 1e-10)

     'TABS': key world if the cavity contains a participating
             medium at a uniform temperature

     VAL   : temperature of the participating medium
             (in degree K)            (flottant type)

     CH2   : radiation matrix (MCHAML type)
             or temperature field (MCHAML type)


 
                                             DATE     06/01/17