Reply To: Working on dryer operating from Solar Load. Help needed!

[SVV]

Hi,

 

You can enable radiation model if you want to solve radiation heat transfer in the fluid volume or between surfaces of the dryer that might exist due to the temperature difference caused by the solar radiation heat load on the system. If the radiation heat transfer is negligible, you can ignore it. A solar load model is used to calculate radiation effects from the sun’s rays that enter a computational domain.

You need to modify the solar load calculators for your model. Solver will use this to compute the direction vector and other inputs which it uses to calculate the solar load. More information on this can be found in 15.3. Modeling Radiation.

I assume you are using shell conduction. If you want to specify a solid material layer over the dryer without actually creating the geometry for solid, you can use shell conduction layer. Under shell conduction settings, you can find option to specify material type. A semi-transparent material requires specification of absorptivity and transmissivity. This value is your input for the material you are using. The thermal boundary condition is the condition which the wall is exposed to other than the solar heating. For example, if the wall is heated, you can apply heat flux boundary condition and provide value.

 

You can use solar heat flux variable available under Wall fluxes to report solar heat flux entering through a wall.