==== Initialization of the velocity, temperature and density over the domain ====

The fluid density is implicitly initialized with a uniform field because the fluid is incompressible and homogeneous. No data set is therefore required.

<note information>
For initializing an incompressible bi-fluid flow, see the [[sunfluidh:two_fluids_initialization_namelist|Namelist "Two_Fluids_Initialization"]].
For initializing a multi-components flow, see the [[sunfluidh:species_initialization_namelist|Namelist "Species_Initialization"]].
</note>

The initial fluid temperature is uniform over the domain.\\

   &Temperature_Initialization Temperature_Reference_Value          = 1.0 ,  !--- Default value 
                               Initial_Field_Option_For_Temperature = 0   /  !--- Initialization of the field with the default value
  
<note information>
At present, only the uniform initialization of the temperature field is available unless the user creates its own initialization procedure in the fortran source file "module_user_define_init_fields.f90".
</note>  
The initial velocity field is defined by spreading out the inflow velocity profile. This choice allows us to ensure a perfect flowrate conservation between inflow and outflow for the first time step.\\


    &Velocity_Initialization  I_Velocity_Reference_Value = 0.0     ,  !--- default value for the I-velocity component
                              J_Velocity_Reference_Value = 0.0     ,  !--- default value for the J-velocity component
                              K_Velocity_Reference_Value = 0.0     ,  !--- default value for the K-velocity component
                            Initial_Field_Option_For_Velocity_I = 3 , !--- the inflow velocity profile is spread out in the I-direction
                            Initial_Field_Option_For_Velocity_J = 0 , !--- Initialization of the field with the default value
                            Initial_Field_Option_For_Velocity_K = 0. /!--- Initialization of the field with the default value

<note information>
The variables related to the white noise have been removed. \\
The velocity field initialization depends on the velocity profile defined in the namelist [[sunfluidh:inlet_boundary_conditions_setup_namelist|Inlet_Boundary_Condition]].\\
For more examples about the velocity field initialization [[sunfluidh:velocity_initialization_examples|click here]].
</note>