===== Examples of data set =====
The user finds here some examples illustrating different configurations related to the namelist [[sunfluidh:velocity_initialization_namelist|"Velocity_Initialization"]]. \\
The data initialized by default, and not explicitly required, are generally not present for a sake of clarity.\\
=== Uniform Velocity field ===
The velocity is oriented along the J-direction only.\\
Its value is $1.5$.\\
Other velocity components are null.
&Velocity_Initialization I_Velocity_Reference_Value = 0.0 , J_Velocity_Reference_Value = 1.5 , K_Velocity_Reference_Value = 0.0 ,
Initial_Field_Option_For_Velocity_I = 0 , Initial_Field_Option_For_Velocity_J = 0 , Initial_Field_Option_For_Velocity_K = 0,
White_Noise_Magnitude_For_Velocity_I= 0.0 , White_Noise_Magnitude_For_Velocity_J= 0.0 , White_Noise_Magnitude_For_Velocity_K= 0.0 /
By considering the default values of the namelist, it could simply be write as :\\
&Velocity_Initialization J_Velocity_Reference_Value = 1.5 /
=== Parabolic velocity profile ===
The velocity is oriented along the J-direction and its mean value over the cross section of the domain is $1.5$.\\
The profile depends on The I-direction.\\
Other velocity components are null.
&Velocity_Initialization J_Velocity_Reference_Value = 1.5 , Initial_Field_Option_For_Velocity_J = 1 /
=== "Spreading" velocity field from an inlet ===
Relevant when just one inlet is present.\\
The normal inflow is oriented along the I-direction.\\
Other velocity components are null.
&Velocity_Initialization Initial_Field_Option_For_Velocity_I = 3 /
The inflow velocity profile is spread out over the domain in the I-direction. The mean value of the velocity component is not required (but this value can still be set just to keep it mind).
=== Parabolic Velocity field with superimposed white noise ===
The velocity is oriented along the J-direction only. Its mean value is $1.5$.\\
The parabolic profile depends on The I-direction.
&Velocity_Initialization I_Velocity_Reference_Value = 0.0 , J_Velocity_Reference_Value = 1.5 , K_Velocity_Reference_Value = 0.0 ,
Initial_Field_Option_For_Velocity_I = 0 , Initial_Field_Option_For_Velocity_J = 1 , Initial_Field_Option_For_Velocity_K = 0,
White_Noise_Magnitude_For_Velocity_I= 0.05 , White_Noise_Magnitude_For_Velocity_J= 0.1 , White_Noise_Magnitude_For_Velocity_K= 0.02 /
A white noise is superimposed on each velocity component such as :
* The random fluctuations on the I-velocity component are 5% of the mean value of the J-velocity component (because the mean value of the I-velocity component is null)
* The random fluctuations on the J-velocity component are 10% of the local value given by the parabolic profile.
* The random fluctuations on the K-velocity component are 2% of the mean value of the J-velocity (because the mean value of the K-velocity component is null)
Keep in mind the magnitude of fluctuations is defined in respect with the local value of the velocity component invoked __ only if it is a non-zero value__ . Otherwise this magnitude is relied on the maximum value given by I_Velocity_Reference_Value, J_Velocity_Reference_Value or K_Velocity_Reference_Value