[ANSYS Meshing] 2D NACA 0012 meshing

biochoker · December 7, 2016, 05:13

Hi all,

Long time lurker and first time OP!

I am currently working on creating a 2D simulation in Workbench while using Ansys meshing and Fluent (k-w SST) as the solver. As with other students I loosely followed Cornell's tutorial and my problem is as follows:

I am trying to keep Y+<5 around the airfoil boundary layer with edge bias in my C-Mesh as per the Cornell tutorial. In order to get the low Y+ value, I have to increase bias factor or number of divisions and consequently:

If I increase bias factor -> Aspect ratio in the far field gets too high resulting in convergance problems
If I increase the number of divisions -> The computational cost is increased by quite a margin and I'm not sure if having 300k elements for a 2D symmetrical airfoil with 150mm chord makes much sense

I am open to suggestions and possible way forwards!

oozcan · December 7, 2016, 06:30

that is suitable for you : http://imechanica.org/files/fluent_1...02-airfoil.pdf

December 7, 2016, 05:13	2D NACA 0012 meshing	#1
biochoker New Member Diagrama DeBloques Join Date: Dec 2016 Posts: 1 Rep Power: 0	Hi all, Long time lurker and first time OP! I am currently working on creating a 2D simulation in Workbench while using Ansys meshing and Fluent (k-w SST) as the solver. As with other students I loosely followed Cornell's tutorial and my problem is as follows: I am trying to keep Y+<5 around the airfoil boundary layer with edge bias in my C-Mesh as per the Cornell tutorial. In order to get the low Y+ value, I have to increase bias factor or number of divisions and consequently: If I increase bias factor -> Aspect ratio in the far field gets too high resulting in convergance problems If I increase the number of divisions -> The computational cost is increased by quite a margin and I'm not sure if having 300k elements for a 2D symmetrical airfoil with 150mm chord makes much sense I am open to suggestions and possible way forwards!

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December 7, 2016, 06:30		#2
oozcan Senior Member Onur Özcan Join Date: Feb 2016 Location: Istanbul/Turkey Posts: 461 Rep Power: 12	that is suitable for you : http://imechanica.org/files/fluent_1...02-airfoil.pdf