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  ThermoFluidCalc — Offline Fortran Execution Guide
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Calculator : Von Neumann Stability Analysis
Category   : Cfd

Files Included:
  - von_neumann.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 von_neumann.f90 -o von_neumann

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

  von_neumann < 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 (Numerical Scheme (1=FTCS, 2=Dufort-Frankel, 3=Laasonen Implicit, 4=Crank-Nicolson)\nCourant number sigma\nDiffusion number r\nNumber of grid points): 1
  Line 2 (Parameter 2): 0.8
  Line 3 (Parameter 3): 0.4
  Line 4 (Parameter 4): 200

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