Floating point exception during meshing

pary07 · September 27, 2017, 07:29

Hello, everyone!

I am performing meshing on my geometry of a single cylinder engine with the exhaust port. I am getting a Floating Point Exception (unknown ) at the end of the meshing. I just have one region for my domain. What I notice is that if my base size is 6mm then there is no error, but if reduced to 5 or 4 then I get the error again. I also tried with FINE and MEDIUM tesselation. Moreover, I repaired my surface before meshing with only the Face quality and Face proximity as errors and after meshing there were 0 surface errors. Also, I checked the mesh quality and everything seemed decent.
Furthermore, I tried running the simulation(steady state) and everything was fine as of now (500 iterations).

So now my question is firstly how to get rid of this floating point error during meshing and secondly, as my simulation gave no problem, so can I proceed with the same for different valve lifts?

Star CCM+ Version: 12.04
Thanks.

me3840 · September 28, 2017, 16:11

I haven't seen this cause problems with the actual solution. It's just a bug in the mesher.

pary07 · September 29, 2017, 05:00

okay, that's nice to know. I did perform further simulations, gave no error yet. So I shall proceed.
Thanks

September 27, 2017, 07:29	Floating point exception during meshing	#1
pary07 New Member Paresh Join Date: Jun 2017 Location: Austria Posts: 27 Rep Power: 9	Hello, everyone! I am performing meshing on my geometry of a single cylinder engine with the exhaust port. I am getting a Floating Point Exception (unknown ) at the end of the meshing. I just have one region for my domain. What I notice is that if my base size is 6mm then there is no error, but if reduced to 5 or 4 then I get the error again. I also tried with FINE and MEDIUM tesselation. Moreover, I repaired my surface before meshing with only the Face quality and Face proximity as errors and after meshing there were 0 surface errors. Also, I checked the mesh quality and everything seemed decent. Furthermore, I tried running the simulation(steady state) and everything was fine as of now (500 iterations). So now my question is firstly how to get rid of this floating point error during meshing and secondly, as my simulation gave no problem, so can I proceed with the same for different valve lifts? Star CCM+ Version: 12.04 Thanks.

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September 28, 2017, 16:11		#2
me3840 Senior Member Join Date: Nov 2010 Location: USA Posts: 1,232 Rep Power: 25	I haven't seen this cause problems with the actual solution. It's just a bug in the mesher.

September 29, 2017, 05:00		#3
pary07 New Member Paresh Join Date: Jun 2017 Location: Austria Posts: 27 Rep Power: 9	okay, that's nice to know. I did perform further simulations, gave no error yet. So I shall proceed. Thanks