Search found 106 matches
- Sat Dec 19, 2020 7:55 am
- Forum: CfdOF / CFD
- Topic: Can’t parallel the solver
- Replies: 13
- Views: 6305
Re: Can’t parallel the solver
Hello, I have the problem when running in parallel cfdOF with bluecfdcore. ERROR: Failed to post close command error 1726 ERROR: unable to tear down the job tree. exiting... I see that the solution is to uninstall/ reinstall bluefcd core but I am afraid to loose my set up with swak4Foam for example ...
- Fri Dec 18, 2020 8:09 pm
- Forum: CfdOF / CFD
- Topic: Chip cooling ==> new solver available
- Replies: 30
- Views: 16958
Re: Chip cooling ==> new solver available
Hello, The case is attached without the polyMesh folder (too big). The Mesh has been generated with Salome 9.5. The residual control < 10^(-6) for h. It converges in 1800 iterations https://zupimages.net/up/20/51/f3id.jpg In the controlDict file, the postreatment for wall power takes into account th...
- Wed Dec 16, 2020 11:02 pm
- Forum: CfdOF / CFD
- Topic: Chip cooling ==> new solver available
- Replies: 30
- Views: 16958
Re: Chip cooling ==> new solver available
Hello, Let me share my results on buoyantSimpleFoam solver. First I have mesh with Salome a 3 parts duct, 1000 mm with adiabatic wall for the mixing of the fluid, 2000 mm for the heat exchange zone (heat transfer coef) and 1000 mm more of adiabatic wall for outlet (I read this tip on cfdonline forum...
- Sun Dec 06, 2020 8:06 am
- Forum: Forum français
- Topic: linear pattern mirror etc
- Replies: 16
- Views: 1307
Re: linear pattern mirror etc
Bonjour,
On dirait que le multibody va arriver finalement
https://forum.freecadweb.org/viewtopic.php?f=19&t=52221
On verra.
Bon dimanche
On dirait que le multibody va arriver finalement
https://forum.freecadweb.org/viewtopic.php?f=19&t=52221
On verra.
Bon dimanche
- Sun Nov 29, 2020 8:40 pm
- Forum: CfdOF / CFD
- Topic: Chip cooling ==> new solver available
- Replies: 30
- Views: 16958
Re: Chip cooling ==> new solver available
To begin to confirm the simulation.
I have done an excel sheet with Colburn assumption in order to calculate the Nusselts number.
I obtain with the case parameters for temp outlet 443 K which is pretty close to the commercial software value.
I have done an excel sheet with Colburn assumption in order to calculate the Nusselts number.
I obtain with the case parameters for temp outlet 443 K which is pretty close to the commercial software value.
- Sun Nov 29, 2020 8:03 pm
- Forum: CfdOF / CFD
- Topic: Chip cooling ==> new solver available
- Replies: 30
- Views: 16958
Re: Chip cooling ==> new solver available
Thank you thschrader for your answer, y+ value is dependant of what you want to calculate with your simulation. For drag and lift force (as describe in the video that you advise to me) the y+ value needs to be less than 5. It is also the case for energy exchange near walls. The tutorial that you wan...
- Sun Nov 29, 2020 4:43 pm
- Forum: CfdOF / CFD
- Topic: Chip cooling ==> new solver available
- Replies: 30
- Views: 16958
Re: Chip cooling ==> new solver available
Hello, Now it is ok for the convergence, thank you. The solver converges < 0.0001 I check y + for buoyantsimplefoam on the webb and it is very tricky. https://www.cfd-online.com/Forums/openfoam-solving/201559-buoyantsimplefoam-energy-balance-error.html I try to record the average temperatures from o...
- Sun Nov 29, 2020 8:28 am
- Forum: Forum français
- Topic: linear pattern mirror etc
- Replies: 16
- Views: 1307
Re: linear pattern mirror etc
Bonjour, Je m'en suis sorti avec draft + une Feuille de paramètres. Renseigner le point de rotation avec les données de la feuille (au passage on ne peut pas sélectionner de point de rotation directement dans draft, il faut accéder aux data pour le raccorder manuellement aux coordonnées de la feuill...
- Sun Nov 29, 2020 12:12 am
- Forum: FEM
- Topic: FreeCAD as pre-post processor for MBDyn
- Replies: 437
- Views: 176947
Re: FreeCAD as pre-post processor for MBDyn
Hello, I am interested in using MBDyn with FreeCAD. I have try some years ago a similar module in Comsol. If I remember well, it has an extra cost in term of memory and time to be able to calculate the constraints in bodies with the dynamic module (elastic bodies). When computing only displacement, ...
- Sun Nov 29, 2020 12:04 am
- Forum: Forum français
- Topic: linear pattern mirror etc
- Replies: 16
- Views: 1307
Re: linear pattern mirror etc
Je suis en train de chercher pour une répétition dans l'atelier Assembly 3, on ne peut pas répéter une pièce comme dans part design ? Exemple, si j'ai une pièce avec une répétition de perçages, est il possible dans l'assemblage d'inclure une vis puis répéter cette répétition sur la vis ? Encore mieu...