Problem with sliding mesh

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March 28, 2012, 10:20
Problem with sliding mesh
#1
Member

Edu
Join Date: Sep 2009
Posts: 36
Rep Power: 7
Dear all,

I'm trying to simulate a wind turbine with the "Sliding Mesh" method. I have divided the fluid in three zones: front, central (which rotates and where the blade is located) and rear. I also set two interfaces between the different zones and the periodicity conditions on both sides in order to simulate only one blade and not the whole propeller.

I attached some photos to show you the problem I have. It can be seen that it works perfectly from the first step until the step 47. At step 48, and I don't know why, the central zone changes the rotating axis (the initial one is the X axis), and it crashes with the rear zone. Something similar occurs at step 82: it changes the rotating axis to a different one at step 83.

żAny idea about why this problem appears or how to solve it?

Regards
Attached Images
 FFF-2.1-3-01000.jpg (72.8 KB, 24 views) mesh-0047.jpg (78.3 KB, 18 views) mesh-0048.jpg (79.1 KB, 15 views) mesh-0082.jpg (82.0 KB, 15 views) mesh-0083.jpg (81.3 KB, 13 views)

Last edited by Edu-R; March 28, 2012 at 13:17.

 March 28, 2012, 20:05 #2 Member   Edu Join Date: Sep 2009 Posts: 36 Rep Power: 7 Any idea?? Last edited by Edu-R; March 29, 2012 at 08:19.

 March 29, 2012, 08:14 #3 Member   Edu Join Date: Sep 2009 Posts: 36 Rep Power: 7 I have removed and done again the mesh, set Fluent conditions and launched the preview of the mesh motion, and the problem doesn't change What can I do?

 March 29, 2012, 11:46 trackindg water surface in wave tank #4 New Member   rz Join Date: Mar 2012 Posts: 25 Rep Power: 0 what s the meaning of selecting sum in "define surface monitor" for "Phrases" , "volume fraction" . I have a 2 phase domain, primary phase is air and secondary phase is water. I am going to track surface changes for water, in internet i read that I have to select sum when i intoduce monitors/surface/surface monitors/define surface monitor. my case is a Neumerical Wave Tank. please help me.

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