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  ThermoFluidCalc — Offline Fortran Execution Guide
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Calculator : 1D Transient Conduction (Heisler Series)
Category   : Conduction

Files Included:
  - transient_conduction_1d.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 -ffree-line-length-none transient_conduction_1d.f90 -o transient_1d

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

  transient_1d < 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 (Geometry Code (1=Plane wall, 2=Cylinder, 3=Sphere)): 3
  Line 2 (Half-Thickness or Outer Radius ($L$) [m]): 0.06
  Line 3 (Conductivity ($k$) [W/m-K]): 110.0
  Line 4 (Density ($\rho$) [kg/m³]): 8530.0
  Line 5 (Specific Heat ($c_p$) [J/kg-K]): 380.0
  Line 6 (Convection Coefficient ($h$) [W/m²-K]): 120.0
  Line 7 (Initial Temperature ($T_i$) [°C]): 150.0
  Line 8 (Ambient Temperature ($T_\infty$) [°C]): 20.0
  Line 9 (Normalized Position ($x/L$ or $r/r_0$) [0-1]): 0.0
  Line 10 (Time ($t$) [s]): 2700.0

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