This data setup are used to define the inflow condition features. The inflow geometry is restricted to rectangular/line forms in 3D/2D configuration. In the particular case of cylindrical geometries, the inlets can be circular, annular or bowed retangular. In fact, the geometry of the inlet fits the grid topology.

  &Inlet_Boundary_Conditions
   Type_of_BC= "INLET", Direction_Normal_Plan= 1 ,
   Plan_Location_Coordinate= -0.05   ,
   Start_Coordinate_of_First_Span = -0.01, End_Coordinate_of_First_Span = 0.01,
   Start_Coordinate_of_Second_Span= 0.0  , End_Coordinate_of_Second_Span= 0.0 ,
   Flow_Direction= 1 ,
   Normal_Velocity_Reference_Value= 1.5E-3  , 
   Temperature_Reference_Value= 293.0 ,   
   Density_Reference_Value=  1.66328E-1,
   Define_Velocity_profile= 0 ,
   Species_Boundary_Condition_Type= 0 , Define_Mass_Fraction_profile= 0 ,
   Temporal_Variation_For_Each_Species= 0  0 0 ,
   Species_Reference_Value= 0.2   0.3   0.5 , !--- Here we suppose 3 species
   Time_Fct_Name= "Sinus" , Time_Fct_Threshold= 0.0 , 
   Time_Fct_Time_Scale= 1.0 , Time_Fct_Magnitude= 0.0 ,
   End_of_Data_Block= .true. /
                          

• Type : String of 6 characters
• Name to define the inflow boundary conditions type. Only one kind of inlet boundary condition is defined at present (Dirichlet type) and the associated name is “INLET”.

• Type : integer value
• This data defines the orientation of the normal vector the inlet in respect with the grid {I,J,K}. The values 1, 2 or 3 point the I, J or K-direction, respectively.
• Default value : none

• Type: real value
• Coordinate of the position of the inlet plan along the normal direction previously defined.
• Default value : none

• Type : real value
• This coordinate defines the lower side of the inlet plan span along “the first direction” (see the note above).
• Default value : none

• Type : real value
• This coordinate defines the upper side of the inlet plan span along “the first direction” (see the note above).

• Type : real value
• This coordinate defines the lower side of the inlet plan span along “the second direction” (see the note above).
• Default value : none

• Type : real value
• This coordinate defines the upper side of the inlet plan span along “the second direction” (see the note above).
• Default value : none

• Type : integer value
• This value is set to 1 or -1. It indicates the presumed direction of the inflow in accordance to the position of the outlet. If the inflow is oriented along the increasing or decreasing index (for a given direction) the value is set to 1 or -1, respectively.
• Default value : none

• Type : real value
• Reference value of the normal component of the velocity. The other ones are automatically set to zero.
• Default value : none

• Type : Integer value
• Type of the velocity profile over the inlet :
  • 0 : Uniform profile
  • 1 : Parabolic profile along the first span direction (the mean velocity at the inlet is defined with the “Normal_Velocity_Reference_Value”)
  • 2 : Parabolic profile along the second span direction (the mean velocity at the inlet is defined with the “Normal_Velocity_Reference_Value”)
  • Default value = 0

When the parabolic profile is selected, it is defined from the “Normal_Velocity_Reference_Value” which is the bulk velocity (space averaged velocity).

• Type : Integer value
• This data allows the user to define a time variation of the flowrate :
  • 0 : the flowrate is constant
  • 1 : the flowrate is variable in time. The time functions can be defined by the users in the specific module of the code named “module_user_defined_temporal_function.f90”. The parameters of the time-function can be read from the following variables :
    • Time_Fct_Name :character string linked to the user's time function defined in the module “module_user_define_temporal_function.f90”. At present, two temporal functions are available, The sinusoidal function (named “Sinus”) and the linear-ramp function, (called “ Linear_Ramp”).
    • Time_Fct_Threshold : time from which the time function starts.
    • Time_Fct_Time_Scale : time scale of the function (i.e the period for the sinusoidal function, and the time range for the linear ramp function)
    • Time_Fct_Magnitude : magnitude of the time function.
  • Default value= 0

• Type : real value
• Reference value of the temperature.
• Default value : none

• Type : real value
• Reference value of the fluid density.

• Type : array of real values (the size is determined by the species number considered)
• This data setup defines the reference value of mass fractions for each species
• Default value : none

• Type : integer value ( Not for the release SUNFLUIDH_EDU ).
• This option defines the inlet boundary
• condition type for the density of species
  • 0 : Dirichlet condition (the mass fraction value is imposed at the center of the ghost-cell).
  • 1 : The mass flux value is imposed on the inlet plan. This flux is defined as $F_i=\rho.Y_i.\vec{V}$ : the product of the variables “Define_Velocity_profile”, “Normal_Velocity_Reference_Value” and “Species_Reference_Value” . The diffusion flux is null.
• Default value : none

• Type : integer value ( Not for the release SUNFLUIDH_EDU ).
• This data determines the distribution law on the first species mass fraction over the inlet (the complementary law is reported on the 2nd species by default):
  • 0 : Uniform profile
  • 1 : Heaviside profile centered on the inlet
• Default value : none

• Type : array of integer value (the size is determined by the species number considered. Not for the release SUNFLUIDH_EDU ).
• This data setup defines time function used to define the temporal variation of species. The time functions can be programmed by the user in the fortran file named “module_user_define_temporal_functions.f90”. Sinusoidal and linear ramp functions can be used by means of time parameters already described in the part “Variable_Flowrate” .
• Default value : none

• Type : boolean value
• Specify the end of the namelist or a group of this type of namelist (if true).