[ICEM] ICEM CFD Segmenting curve by point

MDN · November 13, 2020, 17:01

Hi,

I'm new to this website so my apologies if this isn't the correct way to ask this question, I would appreciate any advice on the right way to use the forum.

In ANSYS ICEM CFD, I am trying to segment a circular curve by two points on the curve however I am getting the error that it could not split the curve. Is this because I concatenated several curves to make the circle beforehand?

Thank you for your help.

aero_head · November 13, 2020, 17:57

Hello MDN,

Yes, that happens to me sometimes, usually when there are two curves on top of eachother and it is selecting the wrong one. Try segmenting it where you need to prior to concentrating any curves.
As well, why not just make a circle with the given options (i.e. radius and 2 points) rather than concentrating curves?

MDN · November 14, 2020, 04:33

Hi Kira,

Thanks so much for your reply. The 'circle' is irregular (as it's the opening of the heart's left ventricle) but I will try and segment it where I need to before concatenating the curves this time. Thank you for your help!

Gert-Jan · January 9, 2023, 03:19

1) From the existing but unreliable curves, create new points, just by clicking on the curve. Or on a fraction of the curve, e.g. 0, 0.33 and 0.66.
2) Then delete all curves and points that are annoying, except for these new points.
3) Then create new straight lines between the new points.
4) Project these lines on the surfaces, to create curves on the surfaces.
5) delete the straight lines, if you not already did in step 4.

dmaestre · May 19, 2023, 23:37

Hello everyone

I would appreciate any help with the same subject.

I had the same problem in ICEM CFD. When I was trying to segment a circular curve by two points specifically in an intersection with another circular curve. I am getting the error that it could not split the curve. I have also tried create additional points in order to do the segmentation with these new points but it's impossible. Please could anyone give a recommendation or any suggestion?

Thank you for your help. I would appreciate any comments

Gert-Jan · May 20, 2023, 04:35

I have been working with ICEM for 20 years and never found a solution, other than creating new circles or splines from from new points, using the procedure given above.

dmaestre · May 21, 2023, 10:04

Thanks Gert-Jan

Your experience with ICEM is enough to check my subject. Thank you so much.

Regards

November 13, 2020, 17:01	ICEM CFD Segmenting curve by point	#1
MDN New Member M Join Date: Nov 2020 Posts: 7 Rep Power: 5	Hi, I'm new to this website so my apologies if this isn't the correct way to ask this question, I would appreciate any advice on the right way to use the forum. In ANSYS ICEM CFD, I am trying to segment a circular curve by two points on the curve however I am getting the error that it could not split the curve. Is this because I concatenated several curves to make the circle beforehand? Thank you for your help.

November 13, 2020, 17:57		#2
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 8	Hello MDN, Yes, that happens to me sometimes, usually when there are two curves on top of eachother and it is selecting the wrong one. Try segmenting it where you need to prior to concentrating any curves. As well, why not just make a circle with the given options (i.e. radius and 2 points) rather than concentrating curves? MDN likes this.

November 14, 2020, 04:33	Thank you	#3
MDN New Member M Join Date: Nov 2020 Posts: 7 Rep Power: 5	Hi Kira, Thanks so much for your reply. The 'circle' is irregular (as it's the opening of the heart's left ventricle) but I will try and segment it where I need to before concatenating the curves this time. Thank you for your help!

January 9, 2023, 03:19		#4
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,835 Rep Power: 27	1) From the existing but unreliable curves, create new points, just by clicking on the curve. Or on a fraction of the curve, e.g. 0, 0.33 and 0.66. 2) Then delete all curves and points that are annoying, except for these new points. 3) Then create new straight lines between the new points. 4) Project these lines on the surfaces, to create curves on the surfaces. 5) delete the straight lines, if you not already did in step 4. mluckyw and Alley like this.

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May 19, 2023, 23:37		#5
dmaestre New Member Darwin Join Date: Sep 2022 Posts: 5 Rep Power: 3	Hello everyone I would appreciate any help with the same subject. I had the same problem in ICEM CFD. When I was trying to segment a circular curve by two points specifically in an intersection with another circular curve. I am getting the error that it could not split the curve. I have also tried create additional points in order to do the segmentation with these new points but it's impossible. Please could anyone give a recommendation or any suggestion? Thank you for your help. I would appreciate any comments

May 20, 2023, 04:35		#6
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,835 Rep Power: 27	I have been working with ICEM for 20 years and never found a solution, other than creating new circles or splines from from new points, using the procedure given above.

May 21, 2023, 10:04		#7
dmaestre New Member Darwin Join Date: Sep 2022 Posts: 5 Rep Power: 3	Thanks Gert-Jan Your experience with ICEM is enough to check my subject. Thank you so much. Regards