=========================================================================
  ThermoFluidCalc — Offline Fortran Execution Guide
=========================================================================

Calculator : Free Convection in Enclosures
Category   : Convection

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

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

  gfortran -O3 enclosure_convection.f90 -o enclosure_convection

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

  enclosure_convection < input.txt

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

  Line 1 (Enclosure type (1=Vert Rect, 2=Horiz hot bottom, 3=Horiz hot top, 4=Concentric Cyl, 5=Concentric Sph)): 1
  Line 2 (Gap size L [m]): 0.02
  Line 3 (Height H [m]): 0.5
  Line 4 (Width W [m]): 1.0
  Line 5 (Inner/First diameter Di [m]): 0.0
  Line 6 (Outer/Second diameter Do [m]): 0.0
  Line 7 (Hot surface temperature T_hot [C]): 60.0
  Line 8 (Cold surface temperature T_cold [C]): 20.0
  Line 9 (Fluid type (1=Air, 2=Water, 3=Oil)): 1
  Line 10 (Custom thermal expansion coefficient beta [1/K] (0=auto)): 0.0

=========================================================================
ThermoFluidCalc — https://thermofluidcalc.com
