Software that calculate compression of gas? Details in text

I am not sure if this is the correct area to post this

I need a simulation of a machine I designed. I have a 3D model and have some experience in 3D programs. I have experience working with compressors via school and work.

I am also very patience and willing to learn new programs.

Requires...

-Centrifugal forces on two different planes

-Gas inertia

-Conversion of velocity to pressure and vice versa (Diffusion And Airfoil)

-Pressure calculation.

Optional

-Efficiency of torque on shaft to convert gas pressure. (Drag, compression resistance etc)

-Blade optimization

Not Required

-Heat transfer among-st material

-Material stress and materiel fatigue

-Extreme accuracy, I only need a rough estimate

Preference

I prefer that the program isn't insanely intensive or is capable to slowly simulate for slow computers AND not insanely expensive.

Great design resource

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