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  ThermoFluidCalc — Offline Fortran Execution Guide
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Calculator : Real Gas Compressibility Factor Z
Category   : Tools

Files Included:
  - compressibility_z.f90 (Fortran Source Code)
  - input.txt (Pre-configured Sample Input)

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1. How to Compile
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Make sure you have a Fortran compiler installed (like gfortran).
Run the following compilation command in your terminal:

  gfortran -O3 compressibility_z.f90 -o compressibility_z

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2. How to Execute
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Run the compiled binary and redirect the input.txt file into stdin:

  compressibility_z < input.txt

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3. Input File Details
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The input file 'input.txt' contains sequential parameters separated by
newlines. Here is the structure of the included 'input.txt':

  Line 1 (Gas type (1=Nitrogen, 2=Oxygen, 3=CO2, 4=Methane, 5=Hydrogen, 6=Air, 7=Custom)): 1
  Line 2 (Temperature T [K]): 300.0
  Line 3 (Pressure P [MPa]): 10.0
  Line 4 (Custom critical temperature Tc [K]): 0.0
  Line 5 (Custom critical pressure Pc [MPa]): 0.0
  Line 6 (Custom acentric factor omega): 0.0

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