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Search took 0.00 seconds. Search: Posts Made By: Tobias Adam
Forum: OpenFOAM October 28, 2014, 04:53
Replies: 52
Views: 27,296
Posted By Tobias Adam
Hello Thorsten Grahs I did a MRFSimple...

Hello Thorsten Grahs

I did a MRFSimple simulation about a whole Windturbine too.
But my results werenīt excellent.
For example: the simulated torque is 15% lower than the experimental results....
Forum: OpenFOAM August 5, 2014, 10:07
Replies: 52
Views: 27,296
Posted By Tobias Adam
PimpleDym Simulation

They PimpleDymSimulation runs quite good, but the longer the simulation goes the bigger the moment of the blade becomes.
The residuals look very good, the stay low in each time step. I used Co=4 as...
Forum: OpenFOAM July 24, 2014, 08:57
Replies: 52
Views: 27,296
Posted By Tobias Adam
I found out something new, which might help...

I found out something new, which might help others.

I tried to map fields from my steady state case to the transient case.
It didnīt work, so I just copied the time folder from steady-state and...
Forum: OpenFOAM June 24, 2014, 10:01
Replies: 52
Views: 27,296
Posted By Tobias Adam
Hi Fatih, sorry for my late reply... ...

Hi Fatih,
sorry for my late reply...

Thanks for this paper, itīs very helpful. I would have been really happy if I got it at the beginning of my thesis:-)
Yes, this was what I asked, and itīs...
Forum: OpenFOAM June 4, 2014, 07:57
Replies: 52
Views: 27,296
Posted By Tobias Adam
MRF and Literature

Thank you very much Julian,

I allready got this from you earlier, but it helped me a lot for my simulations.

A question to everyone:
Does anybody have got literature explaining the...
Forum: OpenFOAM May 12, 2014, 05:39
Replies: 52
Views: 27,296
Posted By Tobias Adam
Hello Actually I got quite good results...

Hello

Actually I got quite good results with a first case that had a very small enclosure.
On the next simulation with a bigger enclosure the flow looks good in paraview, but the residuals for p...
Forum: OpenFOAM April 7, 2014, 07:38
Replies: 52
Views: 27,296
Posted By Tobias Adam
Hey Julian :-) With MRF I got jumping and...

Hey Julian :-)
With MRF I got jumping and fluctuating Residuals for omega and k. First it just does not converge, later it crashes because of these parameters...
SRF does converge very well, but...
Forum: OpenFOAM April 7, 2014, 07:15
Replies: 52
Views: 27,296
Posted By Tobias Adam
Hey Julian , With MRF I got jumping and...

Hey Julian ,
With MRF I got jumping and fluctuating Residuals for omega and k. First it just does not converge, later it crashes because of these parameters...
SRF does converge very well, but...
Forum: OpenFOAM April 1, 2014, 09:54
Replies: 52
Views: 27,296
Posted By Tobias Adam
Simulation of horizontal-axis-wind-turbine

Hello dear Elvis

Did you already simulate a Windturbine?

I would like to get some tips and tricks ore some guidelines from your experience, or some setup files of simulations you already...
Forum: OpenFOAM January 24, 2014, 06:15
Replies: 52
Views: 27,296
Posted By Tobias Adam
Hi Julian, do you simulate three blades or just...

Hi Julian,
do you simulate three blades or just one?
Iīd like to test the MRF solver for my case too! At least when I start the big simulation with mast and rotor!
Iīm doing the simulation on an...
Forum: OpenFOAM January 24, 2014, 05:23
Replies: 52
Views: 27,296
Posted By Tobias Adam
wrong results ...

Hello everyone :-)

The results of my simulation are not as satisfying as they could be.
I compared my cp-values over the Blade with a simulation performed with fluent and got much bigger results!...
Forum: OpenFOAM November 5, 2013, 06:40
Replies: 52
Views: 27,296
Posted By Tobias Adam
Smile First simulation of wind turbine

Hello everyone I answered my own questions for the next newbe :-)


I simulate 120° of the circle. The wind-velocity is 6m/s.
The relative speed of the blade is still missing. The rpm is...
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