Learning Forum

[pashazanousi]

I simulated a floating roof of a tank with a rigid body motion, but I got this error and I don't know why the rigid body flies up?

+--------------------------------------------------------------------+
| ERROR #002100012 has occurred in subroutine Out_NegVol. |
| 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 : -0.1433E-07 |
| Location : ( -0.14775E+02, 0.14609E+01, 0.50000E-02) |

+--------------------------------------------------------------------+

I have refined the mesh several times in the distorted region but I keep getting this error. Moreover, what caused the rigid body to fly up? That's not sensible at all. Would you mind sharing your thoughts on that?

Result.err:

Boundary Conditions:

Initial Local Pressure (Hydrostatic Pressure):

Mesh:

Mesh near the thin deck plate:

Rigid Body setting:

[Nikhil Narale]

Hello, 

 

If you are experiencing this error in your simulation, this may be caused by poor mesh quality or mesh deformation. In case you are using mesh deformation, please refer to section 5.1 of the CFX Reference Guide for more information.

5.1. Mesh Deformation (ansys.com)

If you are not able to access the link, refer to this forum discussion: How to access the ANSYS Online Help

 

Thank you!

Nikhil