DEFINITION PARAMETRIC OF A PARAMETRIC MODEL BY PROSTAR

Prostar allow the definition of parameter, thier initialization and the increment 
to give them when they are used in a loop.

The pre-processing file tut3_inter.inp (link a questo file da aprire in una pagina separata) 
holds four parameters defining the geometry of the model:

- RCIL = radius of the front semicircle
- H20  = height above ground level of the bottom of the blunt object
- HCO  = height of the tail above bottom of the blunt object
- O22  = orizzontal position of the blunt starting point

and three dependent design parameter necessary for mesh definition:

- H21  = height of the tail above ground level
- H22  = height of the top of the blunt object above ground level
- HCIH = height of the semicircle  center above ground level

The parameter can be used to define the vertex of the patch corner, and if it's changed the initial 
value of a parameter all vertexes related to it change accordingly. (line 23:67)  

Next command are related to 2D mesh creation (83:208)

To complete the mesh creation it's necessary to set the current cell type to fluid and to extrude the 
2D mesh in orthogonal direction. (line 210:217)

It's merged the coincident vertexes to have a single block of cells. (line 219:220) 

Next command create a coarse mesh around the first block of cells to reduce the amount of time to compute
the fluidodinamical field; the blocks of cells are joined together by a arbitrary matching. It's necessary 
to make an arbitrary matching instead of a integral matching because the mesh parametrization 
can modify the geometrical localization of the vertexes.(line 240:294)

It's defined the cell faces belonging to the inlet and outlet in interactive mode. (line 339:374)

The last thing is the writing of a file holding the boundary conditions to reuse it during the batch
execution. (line 398)



THE COMMAND FILE PERFORMING BATCH MODEL CREATION

The pre-processing file tut3.inp (link a questo file da aprire in una pagina separata)
is identical to the interactive file except for the boundary definition which is made by
reading a boundary condition file created during the interactive session. (line 367)

Obviously only the batch command file is going to be used during the optimization process.