Heat Flux not being reported provided wall temperature (STAR-CCM)

kev11 · April 21, 2024, 16:22

Hello experts,

I am using STAR-CCM to analyze a few aerothermal properties on a hypersonic vehicle. I settled up a report to output the Surface Average of Boundary Heat Flux on Latest Surface," but I am getting a "no data, undefined ratio" error.

However, when plotting the scalar field of the boundary heat flux, I can clearly see some results. Please see the screenshot attached to this message for more details (yes, this hypersonic vehicle is unrealistic-looking, but ignore that for now, lol).

Why am I getting this error? I set the wall BC condition to a constant wall temp at 300 K if that helps understand the problem at hand.

Please help I am super confused.

Best,

Kev11

LuckyTran · April 21, 2024, 16:26

You want the latest mesh, not the latest surface. Similarly, make sure you select the surfaces in regions and not parts.

CAD is CAD. CAD is not CFD.

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April 21, 2024, 16:26		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,704 Rep Power: 66	You want the latest mesh, not the latest surface. Similarly, make sure you select the surfaces in regions and not parts. CAD is CAD. CAD is not CFD.