Hi all, I am modeling a theater which is cooled by natural ventilation in the summer. I have holes, grilles and louvres in the model and until the apache DSM simulation all seems to be good.
When I run my cfd simulation some of the holes are not appearing on the cfd viewer( after the simulation has run). Does anyone know why is this happening?
Secondly, I used the constant effective viscosity model because convergence couldn't be achieved with the k-e model. My thinking is that this was caused because of the coarse grid I used due to memory limitations. Will there be any significant difference on the results with this turbulence model? I am mostly interested in the maximum velocities through the openings to maintain the occupancy comfort.
Thanks
Holes not appearing on CFD
Re: Holes not appearing on CFD
MicroFlo only recognises one hole per surface. If you have multiple holes per surface, you will have to split and reconnect the space in such a way that there is only on hole per surface.
Using constant eff viscosity model tends to produce a more diffuse flow field as compared to using k-e. You may have a diffuse flow field anyway due to using coarse grid which might add tot the effect. But you should be able to get a general idea of how the flow field looks like.
Using constant eff viscosity model tends to produce a more diffuse flow field as compared to using k-e. You may have a diffuse flow field anyway due to using coarse grid which might add tot the effect. But you should be able to get a general idea of how the flow field looks like.
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Re: Holes not appearing on CFD
Thank you for the answer. However, a new problem occurred now.When I export boundary conditions I can see there is flow though a hole for example in a specific room. When I include this room in a multi zone space the boundary conditions for the opening (i.e supply) disappears when importing the boundary conditions for the multizone space. Is there any reason for that?