[v_herw]

Hi guys,

i have a little problem creating a connector at an open trailing edge of an airfoil.
i wrote a script to create the connector between the ending points of an open Trailing edge:

	#create TE connector
	set TwoPoints [pw::Application begin Create]
	  set SegmentSpline [pw::SegmentSpline create]
	  set con1 [pw::GridEntity getByName "con-1"]
	  set con2 [pw::GridEntity getByName "con-2"]  
	  $SegmentSpline addPoint [$con1 getPosition -arc 0]
	  $SegmentSpline addPoint [$con2 getPosition -arc 1]
	  set CreateCon [pw::Connector create]
	  $CreateCon addSegment $SegmentSpline
	  $CreateCon calculateDimension
	$TwoPoints end

now i have different airfoil coordinates (created with XFOIL) which i will import into PW and then create the Connector (or the database connector - i tried both).

For some reasons PW is creating not a connector instead of a pole at some of the TEs. I am not able to understand it - first of all i thought it might be because the TE gap is too small but i tried it with much smaller TE gaps and it is working.

so my question:
due to which reasons is PW creating a pole instead of a connector?

thanks a lot Vanessa

[v_herw]

to make a bit more clear what i mean i attached some pictures of the problem.

i don't know what happened while importing my database but it seems like there aren't any ending points at some of the open trailing edge endings.

this foil is an interpolation (made by xfoil) between a Naca4415 and a Naca4418 with an open trailing edge. As i said before i made some other airfoils with the same scripting and the import in PW didn't occur any problem.

Does anybody has an idea what might happened here?


Thanks a lot for your help

[cnsidero]

Originally Posted by v_herw

to make a bit more clear what i mean i attached some pictures of the problem.

i don't know what happened while importing my database but it seems like there aren't any ending points at some of the open trailing edge endings.

this foil is an interpolation (made by xfoil) between a Naca4415 and a Naca4418 with an open trailing edge. As i said before i made some other airfoils with the same scripting and the import in PW didn't occur any problem.

Does anybody has an idea what might happened here?


Thanks a lot for your help

Based on the images, my feeling is the trailing edge gap is smaller than the node tolerance. Measure the TE gap and compare it to the node tolerance (File>Properties). If the former is small than the later, you need to decrease the node tolerance.

[cnsidero]

Did this fix your issue?

[v_herw]

Yes ))))

i tried it before but it didn't work - now I decreased the node tolerance a lot and it works