Free stream temperature and external radiation temperature

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  • Last Post 19 February 2019
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Kepojeyathas94 posted this 19 February 2019

Hi everyone. 
I'm using the solar loading model (DO model and Solar ray tracing) for my building simulation with Fluent. Should I've to set a specific value for the free stream temperature and external radiation temp even I'm using the solar loading? Can you please me explain the meaning of these two temperature?

rwoolhou posted this 19 February 2019

Free stream temperature is used to allow convective losses to the environment (or heat addition if the environment is warmer). Read through the documentation on the solar model & wall heat transfer: for most cases free stream & radiation temperature can be set the same. It's been a while since I last looked at this so do some testing. 

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