[ANSYS Meshing] Error in Meshing

Rudolf Diesel · October 17, 2017, 19:00

Hi Everyone!!
I'm trying to analyse a combustion chamber in ANSYS Fluent 18

I have a problem mesh writing.
When I click the "Generate Mesh",ANSYS says this error:

・A mesh control is not associated to any geometry.
Project>Model>Mesh>Sweep Method (Chamber-Top)

・A mesh control is not associated to any geometry.
Project>Model>Mesh>Sweep Method (Piston-Inflation)

・A mesh control is not associated to any geometry.
Project>Model>Mesh>Sweep Method (Piston-Inner)

・A mesh control is not associated to any geometry.
Project>Model>Mesh>Sweep Method (Chamber-Bottom)

I already tried to remake the engine model,but i get a same error.

This is the error which i got.
https://ibb.co/b4bfRR

How can I resolve this error?
Can anyone help me?

Thank you!!

bpulat · October 18, 2017, 03:39

Did you define your Source and you are still getting this error ? Src/Trg Selection is set to Manual.

Rudolf Diesel · October 18, 2017, 20:40

Thank you for reply.

I defined source,but I still get error.
https://ibb.co/eru0d6

I think I have some problems in engine model which I made in SolidWorks.
Because when I used the engine model without piston bowl,I don't get error.
https://ibb.co/g5QsQm

bpulat · October 19, 2017, 03:47

When you right click the Mesh -> Show -> Sweepable Bodies you can see the problematic geometry.
What i would do in your situation is first, i will define the geometry which is not sweepable and what is causing the problem.
Then either i fix it in 3D modeling or i would use Virtual Topology in ANSYS.
Another suggestion is that using multizone the part that you can't sweep.

Hope it helps.

Rudolf Diesel · October 24, 2017, 04:13

I am so sorry for late reply.
I am glad to inform you that the problem is now solved.
Thank you so much.

Hitesh12 · July 12, 2019, 01:15

Quote:

Originally Posted by Rudolf Diesel

I am so sorry for late reply.
I am glad to inform you that the problem is now solved.
Thank you so much.

How were you able to solve the problem?

xtanvi · November 27, 2019, 00:52

How did you manage to solve the problem ?

abeldar · February 1, 2020, 12:08

Please post the solution that worked for you so that others can benefit from it as well. I am facing the same problem.

deepankarbiswas · February 27, 2020, 14:15

I had also faced the similar problem, but later while checking with the meshing tree, i found that I had missed defining no. of elements to an edge. That showed the (?) question mark symbol, because of which the error message was displayed.

hcplankton · January 19, 2023, 06:31

Yes, I can confirm. If you get this error, look for question mark (?) in mesh tree and fix it.

October 17, 2017, 19:00	Error in Meshing	#1
Rudolf Diesel New Member Rudolf Diesel Join Date: Jun 2017 Posts: 15 Rep Power: 8	Hi Everyone!! I'm trying to analyse a combustion chamber in ANSYS Fluent 18 I have a problem mesh writing. When I click the "Generate Mesh",ANSYS says this error: ・A mesh control is not associated to any geometry. Project>Model>Mesh>Sweep Method (Chamber-Top) ・A mesh control is not associated to any geometry. Project>Model>Mesh>Sweep Method (Piston-Inflation) ・A mesh control is not associated to any geometry. Project>Model>Mesh>Sweep Method (Piston-Inner) ・A mesh control is not associated to any geometry. Project>Model>Mesh>Sweep Method (Chamber-Bottom) I already tried to remake the engine model,but i get a same error. This is the error which i got. https://ibb.co/b4bfRR How can I resolve this error? Can anyone help me? Thank you!! Last edited by Rudolf Diesel; October 17, 2017 at 23:30.

October 24, 2017, 04:13		#5
Rudolf Diesel New Member Rudolf Diesel Join Date: Jun 2017 Posts: 15 Rep Power: 8	I am so sorry for late reply. I am glad to inform you that the problem is now solved. Thank you so much. bpulat likes this.

February 27, 2020, 14:15	Simple solution	#9
deepankarbiswas New Member Deepankar Biswas Join Date: Jun 2017 Location: Mumbai Posts: 1 Rep Power: 0	I had also faced the similar problem, but later while checking with the meshing tree, i found that I had missed defining no. of elements to an edge. That showed the (?) question mark symbol, because of which the error message was displayed.

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October 18, 2017, 03:39		#2
bpulat Member Baris PULAT Join Date: Sep 2016 Location: Italy Posts: 59 Rep Power: 9	Did you define your Source and you are still getting this error ? Src/Trg Selection is set to Manual.

October 18, 2017, 20:40		#3
Rudolf Diesel New Member Rudolf Diesel Join Date: Jun 2017 Posts: 15 Rep Power: 8	Thank you for reply. I defined source,but I still get error. https://ibb.co/eru0d6 I think I have some problems in engine model which I made in SolidWorks. Because when I used the engine model without piston bowl,I don't get error. https://ibb.co/g5QsQm

October 19, 2017, 03:47		#4
bpulat Member Baris PULAT Join Date: Sep 2016 Location: Italy Posts: 59 Rep Power: 9	When you right click the Mesh -> Show -> Sweepable Bodies you can see the problematic geometry. What i would do in your situation is first, i will define the geometry which is not sweepable and what is causing the problem. Then either i fix it in 3D modeling or i would use Virtual Topology in ANSYS. Another suggestion is that using multizone the part that you can't sweep. Hope it helps.

November 27, 2019, 00:52		#7
xtanvi New Member Join Date: Nov 2019 Posts: 1 Rep Power: 0	How did you manage to solve the problem ?

February 1, 2020, 12:08		#8
abeldar New Member Andy Join Date: Oct 2019 Posts: 4 Rep Power: 6	Please post the solution that worked for you so that others can benefit from it as well. I am facing the same problem.

January 19, 2023, 06:31		#10
hcplankton New Member Join Date: Mar 2022 Posts: 1 Rep Power: 0	Yes, I can confirm. If you get this error, look for question mark (?) in mesh tree and fix it.