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Extenral CFD analysis and Pressure coefficients

 
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ggiannakis



Posts: 1
PostPosted: Mon Sep 12, 2011 3:47 pm    Post subject: Extenral CFD analysis and Pressure coefficients Reply with quote

According to DesignBuilder CFD manual, exeternal analysis can be used to calculate more accurate pressure coefficients for EnergyPlus calculated natural
ventilation simulations. However, it is not clear to me how I can get the resulted Cp coefficients (in other words, I can not find the related results) and import them to the EnergyPlus simulation.
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Andy Tindale



Posts: 2619
Location: Stroud
PostPosted: Mon Sep 12, 2011 4:09 pm    Post subject: Reply with quote

There are no productivity functions included within DesignBuilder to facilitate this process at the moment. So you would need to run 6 or so external CFD simulations, one for each of the wind directions referred to in the Cp data. Then for each surface you would have to calculate the pressure coefficient. It's not a very fast process but users have done it in the past.

Andy
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