Non-Smooth Contours Along Symmetry Lines in Radiosity Cavities

[flash3780]

I'm wondering if anyone else has run into this sort of problem: I'm getting step changes in my contour plots along lines of symmetry in my radiation cavities.

My model is 1/8 symmetry and I'm using RSYMM to reflect the geometry. I get step-changes in the my results along the lines of symmetry. Please see the attached pictures of the surface temperatures and surface heat flux results to see what I'm talking about.

Any ideas are much appreciated. I'm about to put in a ticket with Ansys, but I have a feeling that it's something dumb that I've overlooked. Thanks for the help.

Surface Temperatures for Radiation Cavity
Net Radiation Heat Flux for Radiation Cavity


//signed//
Christopher K. Hubley
Mechanical Engineer
Sunpower Incorporated
Athens, Ohio
--

http://engineeringliberty.wordpress.com

 

[flash3780]

Whelp, I talked to ANSYS about this, and they think it's a bug in their radiosity solver. The folks in Pune, India are working hard on sorting it out.

//signed//
Christopher K. Hubley
Mechanical Engineer
Sunpower Incorporated
Athens, Ohio
--

http://engineeringliberty.wordpress.com

 

[kan123]

Flash,
Be sure to let us know the outcome. We had a user who found a big bug with Workbench Random Vibration and it took a year before a Class3 Error Report was distributed by ANSYS (WB2011-24: Don't exclude any modes when calculating responses).