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$$$$ FRON     NOTICE  CHAT      11/09/12    21:16:20     7124           
                                             DATE     11/09/12

  Operateur FRON                           Voir aussi : 
    --------------     
   CHT2 = FRON CHT1 CHCARA T1 DT ;


    Description :
    ____________

 The operator FRON enable to follow the advance of a front on a
structure whenever it propagates isotropically at a given
space dependant velocity ('VIT' component of CHCARA). The combustion
is charcaterized by a duration of combustion ('TCMB' component of 
CHCARA).
 One must specify a field by point (CHT1) containing the estimated
time of combustion at time T1. 
 Then the operator computes the estimated time of combustion at time 
T2 = T1 +DT. If the point has already burnt at time T1, the operator
keeps the value of CHT1 in CHT2. Teh result is stored in CHT2. 

  CHT2:   field by point with component 'TPS' 
  CHT1:   field by point with component 'TPS' (at time T1)
  CHCARA: field by point with components
                    'VIT' as the front velocity
                    'TMCB' as the combustion duration
 T1:      time at which CHT1 was computed
 DT:      time step. CHT2 is computed at time T2=T1+DT.

$$$$

 

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