[TRNSYS-users] wind speed

[thomas.geier3 at freenet.de]

Hi,
 
maybe you also can try OpenFOAM with TRNSYS like HVACTool? OpenFOAM is Open Source.
 
Best Regards
Thomas
 
 
-----Ursprüngliche Nachricht-----
 Von: "jeannieboef at gmail.com" [jeannieboef at gmail.com]
 Gesendet: Do. 14.03.2013 06:44
 An: "TRNSYS users mailing list at the Solar Energy Lab UW-Madison" [trnsys-users at cae.wisc.edu]
 Kopie: "TRNSYS users mailing list at the Solar Energy Lab UW-Madison" [trnsys-users at cae.wisc.edu]
 Betreff: Re: [TRNSYS-users] wind speed

Second that. However for inexperienced simulants I would highly recommend DesignBuilder for building CFD studies. It's cuboid modelling grid combined with full energyplus Air Flow Network boundry condition generation and super user interface, remains the most rewarding building CFD package today. Free 30 day trial and student licensing options.I usually avoid advertising speak, but in this case IMO there is for our friend no alternative. Like David said Trnsys coupling with COMMIS or FLUIENT is not for beginners and actually even crack definition and CFD boundary condition setup is very technical.Hope this can help.

Sent from my iPhone
On 14.03.2013, at 04:55, Matt Duffy <duffy at tess-inc.com> wrote:

You are a patient saint, DB...

Sent from my iPhone
On Mar 13, 2013, at 9:29 PM, David BRADLEY <d.bradley at tess-inc.com> wrote:

Jihad,
   CFD stands for Computational Fluid Dynamics. CFD Software packages     are highly complex and seek to determine air flows by breaking up     air volumes into millions and millions of finite elements; each     finite element's momentum is described by the Navier Stokes     equations. While TRNSYS can connect with Fluent (one particular CFD     tool), it does not have a CFD package built in. Cosimulation between     TRNSYS and a CFD is a very rarely used technique and is almost never     used in building simulation because of the enormous time needed to     solve the flow problem. 
 
 I think it would be wise to find a TRNSYS expert who can assist you     in defining the problem that you want to simulate and to determine     whether you really need to know the speed of air flowing through     your building. If interzonal air flows are needed at all then     simplified approaches are used (TRNFlow, CONTAM, etc.). I want to     stress, however, that even these simplified techniques are quite     complicated to implement, are not for TRNSYS beginners and more     often than not, are unnecessary except for complex spaces such as     atria and for natural ventilation studies. 
 
 Regards,
  David
 
 
On 3/13/2013 11:11, jihad alaoui sosse       wrote: thanks                                                           but when i can                                                           find the  CFD                                                            softwares on my instalation. 
                                               Jihad                   Alaoui Sosse Ingénieur d'étude
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