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Hello Alex,<BR>
<BR>
I looked through your files & didn't see anything amiss (by the way, it would be best to post your *.rea file). Since it blows up on the first attempt to solve for pressure, perhaps the BC's don't satisfy conservation of mass?<BR>
<BR>
Cheers,<BR>
Frank<BR>
<BR>
<BR>
<BR>
On Tue, 2010-11-16 at 11:40 -0500, nek5000-users@lists.mcs.anl.gov wrote:
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<FONT COLOR="#000000">Hi Nek users,</FONT>
<FONT COLOR="#000000">I am new in using Nek5. I have succesfully simualted the lid-driven flow,</FONT>
<FONT COLOR="#000000">rayleigh-bénard in a square cavity and laminar poiseuille flow. All of</FONT>
<FONT COLOR="#000000">them were 2d cases. I though it would be straightforward to move from 2D</FONT>
<FONT COLOR="#000000">to 3D simualtions but I have not been able to run a 3D poiseuille channel.</FONT>
<FONT COLOR="#000000">I am obtaining an error on Helmoltz solver even in the first iteration.</FONT>
<FONT COLOR="#000000">Please, find output, usr and box files attached.</FONT>
<FONT COLOR="#000000">Thanks in advance.</FONT>
<FONT COLOR="#000000">..........................................</FONT>
<FONT COLOR="#000000"> Alex Fabregat</FONT>
<FONT COLOR="#000000"> Post-doctoral fellow</FONT>
<FONT COLOR="#000000"> University of Ottawa</FONT>
<FONT COLOR="#000000">Department of Mechanical Engineering</FONT>
<FONT COLOR="#000000">_______________________________________________</FONT>
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--
Frank Herbert Muldoon, Ph.D. Mechanical Engineering
Technische Universität Wien (Vienna University of Technology)
Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid
Mechanics and Heat Transfer)
Resselgasse 3
1040 Wien
Tel: +4315880132232
Fax: +4315880132299
Cell:+436765203470
fmuldoo (skype)
<A HREF="http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html">http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html</A>
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