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Showing results 1 to 23 of 23 Search took 0.00 seconds. Search: Posts Made By: wllmk1

Forum: OpenFOAM March 4, 2011, 18:16

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Flow field ok, help needed with heat transfer Hello again! I haven't been posting much to this thread but I have continued working with my problem. I'd like to believe that I have been able to solve my previous issues with stator/rotor +...

Forum: OpenFOAM February 2, 2011, 13:53

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello. increasing rotational speed step by... Hello. increasing rotational speed step by step didnt work as well as I was hoping for.. I mean simulation might run well for 100 steps but then time step continuity error might jump to 1000 from...

Forum: OpenFOAM January 30, 2011, 16:32

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello again. I believe that I got my... Hello again. I believe that I got my MRFZone related issues solved now. This time I tried to solve my continuity errors by reducing the rotating speed. First I tried with 100 rpm and model...

Forum: OpenFOAM January 28, 2011, 12:20

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello. Since my last posts I have spent way... Hello. Since my last posts I have spent way too many hours trying little this and that to make model work. Mainly I have been working MRFSimpleFoam. I got simulation through with MRFSimpleFoam...

Forum: OpenFOAM January 26, 2011, 15:40

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hi I would have some questions about... Hi I would have some questions about MRFSimpleFoam on top of my last post. - My version of MRFSimpleFoam defines facezones automatically if I dont define it. So this means that MRFSimpleFoam...

Forum: OpenFOAM January 26, 2011, 10:52

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello! I continued my project today and... Hello! I continued my project today and following things occured: 1. TurbDyMFoam solved with different rpm's and timesteps (And maCo < 0,1) 2..3 timesteps succesfully. Then I got error which...

Forum: OpenFOAM January 25, 2011, 11:32

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello! Thanks for time step values you... Hello! Thanks for time step values you posted. I had to chance 5 deg rotation to 0,5 deg because solver crashed after few steps with 5deg (rotating speed is 3000 rpm). I left TurbDyMFoam running...

Forum: OpenFOAM January 24, 2011, 11:48

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 1. I didnt have time to wait results with... 1. I didnt have time to wait results with turbDyMFoam but with icoDyMFoam yes, I see rotation happening. Where can I set courant no? And how do I dump transient data? And what does it mean to dump...

Forum: OpenFOAM January 24, 2011, 10:46

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello! I removed cyclicggi patches. In fact... Hello! I removed cyclicggi patches. In fact I modeled the whole (360 degrees) motor with coarse mesh (1,25 M cells) so there was only 1 element between insideSlider and statorwall etc... I...

Forum: OpenFOAM January 21, 2011, 03:01

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello. Thanks for your answer. I have... Hello. Thanks for your answer. I have understood that cyclicGgi is made to do exactly the same job as cyclic patch is. Only difference is that with cyclicGgi the nodes dont have to match. Check...

Forum: OpenFOAM January 20, 2011, 13:01

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello! Thank you so much for your answer!... Hello! Thank you so much for your answer! This is exactly why I started this thread in the first place, I have no experience in cfd and things like this are not obvious to me. Yes I think that...

Forum: OpenFOAM January 19, 2011, 08:10

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello. Today I got my element model... Hello. Today I got my element model converted with ideasUnvToFoam. I defined patches with autoPatch and after that I combined patches with createPatchDict.. Everything went real smooth with no...

Forum: OpenFOAM January 18, 2011, 12:48

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello! Yes I think that you are right. I... Hello! Yes I think that you are right. I should start with coarse mesh to be able to see if any other errors/ complications occur.. But I think that first I go and try solving with periodic...

Forum: OpenFOAM January 18, 2011, 10:53

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello. Thanks for your answer! Today I... Hello. Thanks for your answer! Today I started to build element model of my actual geometry. I did my best to create small elements to air gap and bigger ones elsewhere. I modeled 6 element...

Forum: OpenFOAM January 15, 2011, 12:02

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello again! I have spent something like 20... Hello again! I have spent something like 20 hours building 3d models and element models related to my problem since last post. One thing modeling electric motors in the terms of cfd makes it...

Forum: OpenFOAM January 12, 2011, 02:10

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hey! Thanks again for your answer. You have... Hey! Thanks again for your answer. You have really boosted up my project! I have now been able to model a basic ggi 3D case (two coincentric cylinders). I start practising with more complex case...

Forum: OpenFOAM January 10, 2011, 14:04

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello. I haven't yet been able to send any... Hello. I haven't yet been able to send any stl model because my computers network card broke down and I can't connect to license server of Inventor. However, I did use femap and ideas conversion...

Forum: OpenFOAM January 7, 2011, 17:59

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello. Yes I think it is possible that... Hello. Yes I think it is possible that Femap is not suitable for creating cfd volume. What software would you prefer? Can it be done by netgen or snappyhexmex? I would really appreciate if you...

Forum: OpenFOAM January 7, 2011, 13:26

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Seems like I was too positive earlier. When I... Seems like I was too positive earlier. When I tried to convert a more complicated mesh with more patches I ran to error using ideasUnvToFoam. converting starts normally but in the very end I get a...

Forum: OpenFOAM January 6, 2011, 03:36

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello. Thanks for help. I created 3d... Hello. Thanks for help. I created 3d geometry with Inventor, used Femap for meshing it and succesfully imported mesh and patches to openfoam. I'll try later to solve it and report back here. ...

Forum: OpenFOAM January 5, 2011, 04:35

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hey! Thank you for your answer. I have... Hey! Thank you for your answer. I have studied 2D GGI cases and general structure of data in openfoam. Some questions again: - What kind of 3D mesh should I form? Should I form different 3D...

Forum: OpenFOAM January 2, 2011, 13:32

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Hello. I studied available options for my... Hello. I studied available options for my problem and it seems that rotor stator situation is easiest to set up with ggi and solver like TurboDyMFoam. I understand that I need 1.5-dev version to...

Forum: OpenFOAM December 31, 2010, 07:02

Replies: 38 Rotating rotor inside a frame Views: 8,691 Posted By wllmk1 Rotating rotor inside a frame Hello all. Please bear with me, my english is sometimes something else.. I have been using openfoam (1.7.1) for two days now and I understand poorly some very basic concepts. However I'm...

Showing results 1 to 23 of 23

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