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I successfully found the problem on my simulation. Now the plate
starts its motion, but, simulations doesn't last for more than 3 or
4 timesteps, since deformation of the mesh around the plate during
the motion <br>
leads on vanishing jacobian near the TE of the body. Since I only
need a rigid motion, and I didn't found the possibility to run a
simulation with a moving rigid grid, I changed reference of frame,
running the simulation <br>
in the body frame, and it is working very well.<br>
<br>
Mario<br>
<br>
<div class="moz-cite-prefix">On 09/14/2017 07:14 AM,
<a class="moz-txt-link-abbreviated" href="mailto:nek5000-users@lists.mcs.anl.gov">nek5000-users@lists.mcs.anl.gov</a> wrote:<br>
</div>
<blockquote type="cite"
cite="mid:mailman.739.1505386279.10190.nek5000-users@lists.mcs.anl.gov">I
am trying to simulate a plunging flat plate at various reduced
frequency and amplitude.
<br>
I successfully played a fixed plate invested by a freestream flow,
with Wall conditions on the infintely thin plate, dirichelt
upstream, on the top and on the bottom and outlet downstream.
<br>
Mesh is composed by six box around the plate.
<br>
When I tried to switch on the plunging plate case, changing the
Wall condition to mv, I can't see the plate moving (I tried to
increase both frequency and amplitude, but I can't see the
movement), and the simulation, after
<br>
two steps suddendly diverges. You can see in the attachement the
box, rea, usr map and SIZE I used. I need the vorticity field, and
later on, its time derivative, all over the fluid flow.
<br>
Can you help me?
<br>
<br>
Thanks, Mario
<br>
<br>
<br>
<br>
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<br>
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Mario Ostieri
Ph.D. Student
University of Naples Federico II
Department of Industrial Engineering
Piazzale V. Tecchio 80
80125 Napoli, Italy
tel. +390817682184
email: <a class="moz-txt-link-abbreviated" href="mailto:mario.ostieri@unina.it">mario.ostieri@unina.it</a></pre>
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