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August 9, 2011, 02:02 |
Problem generating IsoSurfaces
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#1 |
Senior Member
Join Date: Dec 2010
Posts: 135
Rep Power: 15 |
Hi guys,
i have got problems with generating IsoSurfaces. In the following u can see my fluid volume. It is closed with the following blocked system: umin = Perio_a1 umax = Perio_a2 vmin= = Imp_Hub;Int_b1_Hub;Int_c1_Hub vmax=Imp_Shroud;Int_c1_Shroud;Int_d1_Shroud wmin = int_a1 wmax = int_d1 In the attachement you can see a few pictures. The problem is that, when i want to create a isosurface, it always says that ther is no corner found, Boundaries #0,#3,#4 do not intersect. What is the problem? My volumina looks closed.... Thanks for help |
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August 9, 2011, 07:27 |
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#2 |
Senior Member
Robert
Join Date: Jun 2010
Posts: 117
Rep Power: 16 |
Could explain more clearly.
An isosurface is a 3D surface at a particular value for a calculated quantity. This does not appear very relevant to the problem you are discussing here. Isossurfaces do, I believe, know anything about geometry but are calculated in a cellwise manner. |
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August 9, 2011, 10:30 |
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#3 |
Senior Member
Join Date: Dec 2010
Posts: 135
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Ok, then another way to explain my problem:
I want to create a plane in the shape of hub, or shroud, or inlet and so on...I thought I have to do this by isosurfaces |
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August 9, 2011, 10:44 |
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#4 |
Senior Member
Robert
Join Date: Jun 2010
Posts: 117
Rep Power: 16 |
Any reason you wouldn't use a section - either plane of cylindrical (with appropriate co-ordinate system)?
You can create sections by using isosurfaces of centroid values but in this case it would not seem the preferred manner. |
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August 9, 2011, 13:31 |
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#5 |
Senior Member
Join Date: Oct 2009
Location: Germany
Posts: 636
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Have you tried "cell surface" (also a derived part)?
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August 11, 2011, 01:34 |
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#6 |
Senior Member
Ping
Join Date: Mar 2009
Posts: 556
Rep Power: 20 |
You are correct to use the iso-surface for this task (since you dont want a plane section), but you first need to setup the block mapped coordinate system to create the interpolated values across your grid on which to base the iso-surface. This is explained well in the Help tutorial topic Tutorial Guide > Turbomachinery Tutorials > Single Row Tutorial > Visualizing the Solution.
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August 11, 2011, 07:17 |
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#7 |
Senior Member
Robert
Join Date: Jun 2010
Posts: 117
Rep Power: 16 |
To be honest you have never said what you are really trying to achieve here, merely that one step has appeared to have failed.
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August 11, 2011, 11:58 |
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#8 |
Senior Member
Join Date: Dec 2010
Posts: 135
Rep Power: 15 |
@ping
Yes the AxialSingle Row Tutorial is exact what i want to do....just mapping of the new coordinate system is not working and i do not understand why.... Here again: umin = Perio_a1 umax = Perio_a2 vmin= = Imp_Hub;Int_b1_Hub;Int_c1_Hub vmax=Imp_Shroud;Int_c1_Shroud;Int_d1_Shroud wmin = int_a1 wmax = int_d1 |
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