Negative Volume In Block

Myra Satuka · September 8, 2014, 12:03

Hello,

This problem make the solver crashed.

"Computation stop because of negative volumes.
Negative volume found in block."

How to overcome this problem?
What should I overlook?

Thank you.

Rombzh · September 11, 2014, 05:47

Hi,

Did it crash soon after the run started ? Are you using mesh deformation ?
Do you witness significant amplitude motions ? It may be that at t=0s the body is quite far away from its final position, which leads to significant mesh deformation, which can lead to negative volumes.

lucar4980 · November 19, 2014, 18:16

You have to carefully check your mesh generation process. A common error is related to Unit value: double check it.
You may also try to refine the grid close to gaps or fillet (if there are any).

www.ampsolutions.it

September 8, 2014, 12:03	Negative Volume In Block	#1
Myra Satuka New Member Amirah Join Date: Jan 2014 Posts: 7 Rep Power: 12	Hello, This problem make the solver crashed. "Computation stop because of negative volumes. Negative volume found in block." How to overcome this problem? What should I overlook? Thank you.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[Other] mesh airfoil NACA0012	anand_30	OpenFOAM Meshing & Mesh Conversion	13	March 7, 2022 17:22
Negative Volume during Mesh Motion Analysis	giov_ingr	FLUENT	2	December 13, 2013 06:09
Courant number blowing up, non-orthogonal mesh?	odellar	OpenFOAM Running, Solving & CFD	5	October 22, 2013 19:50
Possible bug in blockMesh	benru	OpenFOAM Bugs	16	August 17, 2013 19:54
fluent add additional zones for the mesh file	SSL	FLUENT	2	January 26, 2008 11:55

September 11, 2014, 05:47		#2
Rombzh Member Romain Join Date: May 2009 Posts: 40 Rep Power: 16	Hi, Did it crash soon after the run started ? Are you using mesh deformation ? Do you witness significant amplitude motions ? It may be that at t=0s the body is quite far away from its final position, which leads to significant mesh deformation, which can lead to negative volumes.

November 19, 2014, 18:16		#3
lucar4980 New Member Join Date: Oct 2012 Location: Italy Posts: 17 Rep Power: 13	You have to carefully check your mesh generation process. A common error is related to Unit value: double check it. You may also try to refine the grid close to gaps or fillet (if there are any). www.ampsolutions.it