Capture blunt trailing edge

Daniel DA · May 19, 2016, 06:34

Hi all,

i implemented an impeller with a blunt trailing edge and can´t find an option to capture the edge on a better way than the picture will show you. Do someone have an idea what option for example in, for example in B2B Mesh Topology Control, i can change for a better result?
Thanks for the answers.

colinda1 · May 23, 2016, 03:30

Dear Daniel,

AutoGrid5 does not recognize the trailing edge as blunt, as the geometry definition is closed at the trailing edge. Try with a new blade definition just containing pressure and suction side but no geometry definition at the trailing edge. This should do the job.

Daniel DA · May 24, 2016, 12:50

Thanks for the answer.
But the Problem is that i only have a blunt trailing edge and no blunt leading edge. So choosing preasure and suction side does not work =(

colinda1 · May 25, 2016, 02:20

Dear Daniel,

That should not be any problem:
the surfaces defining the pressure and suction side can be closed at the leading edge while open at the trailing edge. AutoGrid5 should automatically detect that the leading edge is closed so no blunt topology will be applied. But at the trailing edge it should be open.

matzen66 · April 10, 2017, 04:23

Hey,

could you maybe explain how you solved the problem? I am trying the same with a blunt leading edge, but the way with choosing pressure/suction side doesnt work. then there is no stagnation point.

May 25, 2016, 02:20		#4
colinda1 Senior Member Colinda Join Date: May 2012 Location: Brussels Posts: 151 Rep Power: 13	Dear Daniel, That should not be any problem: the surfaces defining the pressure and suction side can be closed at the leading edge while open at the trailing edge. AutoGrid5 should automatically detect that the leading edge is closed so no blunt topology will be applied. But at the trailing edge it should be open. Hamidzoka likes this.

April 10, 2017, 04:23	blunted trainling edge	#5
matzen66 New Member Join Date: Apr 2017 Posts: 1 Rep Power: 0	Hey, could you maybe explain how you solved the problem? I am trying the same with a blunt leading edge, but the way with choosing pressure/suction side doesnt work. then there is no stagnation point. Last edited by matzen66; April 10, 2017 at 06:51.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
how to set periodic boundary conditions	Ganesh	FLUENT	15	November 18, 2020 06:09
[ICEM] Blunt Trailing Edge Mesh	jasonbot	ANSYS Meshing & Geometry	8	March 10, 2020 02:58
[Workbench] Meshing for NACA0012 with blunt trailing edge	nvtrieu	ANSYS Meshing & Geometry	0	May 21, 2013 23:09
[DesignModeler] Creating a blunt trailing edge from collapsed leading edge	gmd	ANSYS Meshing & Geometry	0	March 2, 2012 09:48
fluent add additional zones for the mesh file	SSL	FLUENT	2	January 26, 2008 11:55

May 23, 2016, 03:30		#2
colinda1 Senior Member Colinda Join Date: May 2012 Location: Brussels Posts: 151 Rep Power: 13	Dear Daniel, AutoGrid5 does not recognize the trailing edge as blunt, as the geometry definition is closed at the trailing edge. Try with a new blade definition just containing pressure and suction side but no geometry definition at the trailing edge. This should do the job.

May 24, 2016, 12:50		#3
Daniel DA New Member Join Date: Apr 2016 Posts: 13 Rep Power: 10	Thanks for the answer. But the Problem is that i only have a blunt trailing edge and no blunt leading edge. So choosing preasure and suction side does not work =(