Hi,
I’m wondering if Butterfly can do outdoor heat transfer simulation?
Like say the outdoor drybalt temperature is known, and there’re several substation radiators placed outside the building (surface temperature is also known).
Butterfly is not supported this feature.If you want to do this simulation,you need to do some advanced study of OpenFOAM
Hi, @minggangyin
If I understand correctly, does that mean Butterfly only supports heat transfer simulations that have inlets and outlets, but not wind tunnel simulations for outdoor conditions?
What if we manually create the wind tunnel by assigning inlet and outlet boundaries with temperature? I doubt this would make sense, as there would be no wind gradient settings at the inlet, resulting in inaccurate outdoor simulations.
The heat transfer calculation of the butterfly is not inaccurate due to only convective heat transfer being considered, and radiation heat transfer not being taken into account (due to the absence of a radiation model and relevant parameters).
@minggangyin
If the simulation assumes that radiation heat transfer is neglected, just like in a typical wind tunnel simulation, and only the temperature of the boundary is included in the simulation using the Heat Transfer Recipe, would this be feasible?
Yeah, this workflow will run fine.But this workflow is not similar to real world.
So, in the example file (outdoor_airflow), I added a boundary with a temperature of 50°C and ran it using the BF_Heat_Transfer_Recipe with time = 500.
The results are shown in the image below.
As you can see, the probe values only show 0 and 26.85°C (the default value of the recipe). I tried both wall and inlet boundary conditions, but all the results were the same.
Any ideas?
The transfer of heat is not as simple as you might think, as it involves complex physical processes. If you are determined to do some research in this area, it is recommended that you abandon Butterfly and choose more professional CFD software, such as FLuent, Star-ccm+.