Geometry feature optimization

Outbound · April 2, 2018, 06:51

Greetings,

Me and a colleague are wondering whether it's possible to perform geometry feature optimization in STAR.

Now, we're not looking to simply perform a shape optimization as per the " Adjoint Flow: Wing Shape Optimization" tutorial, more like moving around a feature, like say a surface hole around an area in the CAD model to try and obtain an optimal placement for particular flow feature.

Best regards.

me3840 · April 2, 2018, 23:28

Yes, this is quite easy to do in STAR-CCM+.

Just parameterize your CAD model in 3D-CAD so you can change the hole location. Then you can use Optimate or Simcenter to run tons of cases to get you the tradeoffs.

Outbound · April 3, 2018, 11:14

Yes, but what happens if what you're working with is a received volume Mesh geometry in .stl or.x_t format and basically all you have are surfaces, lines and edges with no defined parametric features?

Is it possible to defined these features from an existing surface mesh, even if using external tools?

Best regards,

NadineLock · January 21, 2020, 06:14

@Outbound: Did you find a solution for that?

cwl · January 21, 2020, 08:53

That is not possible in Star, but you could use the feature recognition in other software and transfer CAD directly to Star with all the parametric dimensions; SolidWorks for example can do that - but it does not have a LiveLink to Star any more. NX or Inventor might help.

April 2, 2018, 06:51	Geometry feature optimization	#1
Outbound Member António Soares Join Date: Mar 2015 Location: Lisbon, Portugal Posts: 48 Rep Power: 11	Greetings, Me and a colleague are wondering whether it's possible to perform geometry feature optimization in STAR. Now, we're not looking to simply perform a shape optimization as per the " Adjoint Flow: Wing Shape Optimization" tutorial, more like moving around a feature, like say a surface hole around an area in the CAD model to try and obtain an optimal placement for particular flow feature. Best regards.

January 21, 2020, 08:53		#5
cwl Senior Member Chaotic Water Join Date: Jul 2012 Location: Elgrin Fau Posts: 437 Rep Power: 18	That is not possible in Star, but you could use the feature recognition in other software and transfer CAD directly to Star with all the parametric dimensions; SolidWorks for example can do that - but it does not have a LiveLink to Star any more. NX or Inventor might help. NadineLock likes this.

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April 2, 2018, 23:28		#2
me3840 Senior Member Join Date: Nov 2010 Location: USA Posts: 1,232 Rep Power: 25	Yes, this is quite easy to do in STAR-CCM+. Just parameterize your CAD model in 3D-CAD so you can change the hole location. Then you can use Optimate or Simcenter to run tons of cases to get you the tradeoffs.

April 3, 2018, 11:14		#3
Outbound Member António Soares Join Date: Mar 2015 Location: Lisbon, Portugal Posts: 48 Rep Power: 11	Yes, but what happens if what you're working with is a received volume Mesh geometry in .stl or.x_t format and basically all you have are surfaces, lines and edges with no defined parametric features? Is it possible to defined these features from an existing surface mesh, even if using external tools? Best regards,

January 21, 2020, 06:14		#4
NadineLock New Member Nadine Lock Join Date: Jan 2020 Posts: 5 Rep Power: 6	@Outbound: Did you find a solution for that?