|January 19, 2013, 10:23||
Negative-cell volume error for water entry problem
Join Date: Oct 2011
Location: Athens, Greece
Posts: 19Rep Power: 5
I am trying to simulate a steady velocity motion for a 2D cylinder water-entry problem by using the VOF method in Fluent 13.0. I have already checked the functionality of VOF method within Fluenr for free-surface modeling, by solving a steady-state case.
Thus, now i am using a DEFINE_CG_MOTION UDF with a steady vertical velocity for the solid boundary motion. Due to the quad mesh i use the Smoothing and Layering options for the deforming mesh. Next, i assign the rigid body motion at the moving wall and at a moving fluid zone outside the wall which includes the boundary layer, while the deforming zone is set at the surrounding fluid.
However i get the "Negative-cell volume" detection error.
I have also noticed that at the Dynamic Mesh Zones panel there are more than one zones referred to only one, e.g., for the deforming fluid there is a zone "fluid" and a zone "interior-fluid" as well. I have tried to solve by assigning the deforming zone option at only one of the two labels and at both labels, as well and, at all cases, the negative-cell volume problem remains.
I would be very thankful if someone gave me an idea for facing this problem.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Negative cell volume problem||schuny||FLUENT||8||April 10, 2012 05:16|
|mesh airfoil NACA0012||anand_30||OpenFOAM Meshing & Mesh Conversion||12||December 12, 2011 05:16|
|negative cell volume during dynamic meshing||Tamjid||FLUENT||1||September 5, 2011 02:33|
|BlockMesh FOAM warning||gaottino||OpenFOAM Native Meshers: blockMesh||7||July 19, 2010 14:11|
|Cell has a zero or negative volume||Nick||CD-adapco||5||May 29, 2008 21:37|