This heat conduction tutorial example illustrates how to use data from
a (text) file in an equation coefficient. The tabulated data here
represents non-linear thermal conductivity as a function of
temperature k = f(T). Where the conductivity curve is given as
sin(pi/8) to sin(3/4*pi) for temperature values between 280 to
400. In the data (text) file the first column represents temperature
values and second the coefficient value:
280.0000 0.3827
281.2121 0.4009
...
398.7879 0.7210
400.0000 0.7071
The coefficient is implemented and called from the toolbox using the finterpn function, which also supports interpolation in higher n dimensions (as well as csv and mat file formats).
The model is available as an automated tutorial by selecting Model Examples and Tutorials… > Heat Transfer > Heat Conduction with Tabulated Thermal Conductivity from the File menu. Or alternatively, follow the linked step-by-step instructions.
