Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Help needed – Solar calculator, Solar BC boundary conditions › Reply To: Help needed – Solar calculator, Solar BC boundary conditions
October 22, 2024 at 5:06 pm
AG
Ansys Employee
Switch following option ON and fluent will automatically calculate Diffuse and Direct irradiation depending on the solar beam angle. For setting of diffuse fraction user same analogy used for top window glass. Refer 15.3.8.3. Wall Boundary Conditions for the DO Model for details. Diffuse Fraction is the fraction of the reflected radiation from the wall that is treated as diffuse between 0 and 1.