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Forum: ANSYS Meshing & Geometry

August 16, 2011, 09:49

Replies: 12

[ANSYS Meshing] Very high aspect ratio

Views: 11,923

Posted By zxin

It's really high....yeah...but the most amazing...

It's really high....yeah...but the most amazing thing is i didn't get any warning and it ran very well. Mybe it's not that critical at the boundary.

Forum: ANSYS Meshing & Geometry

August 16, 2011, 09:46

Replies: 12

[ANSYS Meshing] Very high aspect ratio

Views: 11,923

Posted By zxin

Thanks for your effort. I was too aggressive to...

Thanks for your effort. I was too aggressive to get the accurate BL. I will estimate them both.

Forum: ANSYS Meshing & Geometry

August 16, 2011, 09:43

Replies: 12

[ANSYS Meshing] Very high aspect ratio

Views: 11,923

Posted By zxin

Yes, I have tried that. Maybe I should stick on...

Yes, I have tried that. Maybe I should stick on the wall function.

Forum: ANSYS Meshing & Geometry

August 16, 2011, 06:17

Replies: 12

[ANSYS Meshing] Very high aspect ratio

Views: 11,923

Posted By zxin

No, but the Re is 10^6 with high temperature,...

No, but the Re is 10^6 with high temperature, small ref.length and high pressure. I used Grid spacing calculator http://geolab.larc.nasa.gov/APPS/YPlus/, to calculate my first layer height. And I...

Forum: ANSYS Meshing & Geometry

August 16, 2011, 05:26

Replies: 12

[ANSYS Meshing] Very high aspect ratio

Views: 11,923

Posted By zxin

Thanks for the reply. I do need the 10e-6...

Thanks for the reply.
I do need the 10e-6 thickness to get y+ around 1, since I have really high pressure and mach number. Actually I am using mm as the cell size, but there is still some crazy...

Forum: ANSYS Meshing & Geometry

August 15, 2011, 03:53

Replies: 12

[ANSYS Meshing] Very high aspect ratio

Views: 11,923

Posted By zxin

Very high aspect ratio

Hi,

I used Ansys meshing to create a mesh with 10E-6 m first boundary layer height. There are few elements with crazy aspect ratio, around 2000000.....What can I do with this? and unbelieveable I...

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