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Search took 0.00 seconds. Search: Posts Made By: MadsR
Forum: CFX March 24, 2010, 03:29
Replies: 19
Views: 6,734
Posted By MadsR
Hello Dr Flow Squad :-) Well, I am still...

Hello Dr Flow Squad :-)

Well, I am still trying and now I tested for sensitivity of y+. I have varied max(y+) from 0.23 to 4.2. Quite expected as long as max(y+)<2, Cl does not vary much (about...
Forum: CFX March 9, 2010, 02:39
Replies: 19
Views: 6,734
Posted By MadsR
Hi Bak. I totally agree with you, I also prefer...

Hi Bak. I totally agree with you, I also prefer to explicitly specify such figures. Thanks for the info.

/Mads
Forum: CFX March 2, 2010, 02:49
Replies: 19
Views: 6,734
Posted By MadsR
Hi Glenn. Thanks a lot for that pointer - I will...

Hi Glenn. Thanks a lot for that pointer - I will look through it.

I found that changing between zero pressure at the outlet or averaged zero pressure at the outlet changed roboustness (the...
Forum: CFX March 1, 2010, 03:25
Replies: 19
Views: 6,734
Posted By MadsR
@Glenn: Well I guess not necessarily so. The...

@Glenn: Well I guess not necessarily so. The "high resolution" in CFX is just a automatic blending function so in theory it should give good convergence. At least that's how it works for the...
Forum: CFX February 26, 2010, 08:40
Replies: 19
Views: 6,734
Posted By MadsR
Initial experience with high resolution numerics...

Initial experience with high resolution numerics on turbulence is that it won't converge...In my grid dependence study I have three meshes and with highres turbulence numerics I can't get convergence...
Forum: CFX February 26, 2010, 06:36
Replies: 19
Views: 6,734
Posted By MadsR
Thanks for your feedback, Glenn :-) I will...

Thanks for your feedback, Glenn :-)

I will look into the second order numerics for turbulence.

SST: Yes, and both results are with SST model. I am also thinking that the academic code might...
Forum: CFX February 26, 2010, 02:36
Replies: 19
Views: 6,734
Posted By MadsR
Hi Bak_flow and thanks a lot for your valuable...

Hi Bak_flow and thanks a lot for your valuable input. I can't comment much on the academic code since I am not using it and are referring to to results which have been kindly handed to me by the...
Forum: CFX February 23, 2010, 02:34
Replies: 19
Views: 6,734
Posted By MadsR
Hi Glenn. Thanks for your feedback. I am in the...

Hi Glenn. Thanks for your feedback. I am in the process of doing formal grid dependence tests but proximity-tests showed that I needed around 60-chord-lengths of extent to get best results. Drag was...
Forum: CFX February 22, 2010, 05:00
Replies: 19
Views: 6,734
Posted By MadsR
Drag over-prediction

Hi.

I get drag overprediction from CFX simulations of an 2D airfoil

Setup info:
1. I have an 2D airfoil setup in CFX
2. Mesh is created in ICEM Hexa. 200k->900k mesh dependent tests done
3....
Showing results 1 to 9 of 9

 
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