Solid Semi-Transparent BC adjacent Surface

- June 10, 2022 at 12:14 pm
  
  aleo
  Subscriber
  
  Hi everybody,
  I am simulating radiative heat flux (DO) within a semi-transparent medium, being adiabatic on all sides and a semi-transparent opening boundary condition.
  My question is: if I don't assign an adjacent material/fluid touching the solid semi-transparent body at the semi-transparent BC, what refractive index for the "outer zone" is chosen? This plays an important role, as the refraction/reflection/transmission for semi-transparent BCs is dependent on the fraction of n(outside)/n(inside).
  
  Thanks in advance and best,
  Leo

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