Hello. I am doing a hypersonic 2D Axisymmetric flow simulation and I need some help with defining the material properties. I am using the ideal gas law for density. I have to input user defined functions for viscosity, thermal conductivity and specific heat in terms of temperature.

I know that I have to input a C code into the programme, but I am fairly new to C programming language and was wondering if you have some sections in that language that I can use as an example.