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one way FSI: large deflection of cantilever beam inside a microfluidic channel

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Old   October 31, 2012, 00:06
Default one way FSI: large deflection of cantilever beam inside a microfluidic channel
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Osman
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I am facing a negative element volume problem in my simulation of a large deflection cantilever beam inside a microchannel.
I have successfully simulated the large deflection of the cantilever beam alone, without including it inside the microchannel.

This is the error which i have:

+--------------------------------------------------------------------+
| ERROR #002100012 has occurred in subroutine cVolSec. |
| Message: |
| A negative ELEMENT volume has been detected. This is a fatal |
| error and execution will be terminated. The location of the first |
| negative volume is reported below. |
| Volume : -0.2324E-19 |
| Location : ( 0.81539E-02, 0.48932E-03, 0.22310E-04) |
+--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| CFX encountered the error: |
| 0. A folded mesh has oc- |
| curred. This process will shut down as soon as possible. |
| |
| |
| |
+--------------------------------------------------------------------+

The location of the folded mesh is shown in the attached figures.
Help please.
Attached Images
File Type: jpg ANSYS1.jpg (25.2 KB, 16 views)
File Type: jpg ANSYS2.jpg (20.3 KB, 14 views)
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Old   October 31, 2012, 00:17
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Osman
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i have loaded the mesh in the last step before the folding to ICEM to check the mesh and i get this error:
Delaunay violation
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