Hello,
I have used McCryoT to determine the heat loads via radiation on my cryostat. When trying to generate some meaningful pictures for an upcoming presentation, I ran into some problems with the texture scaling:
- min and max values cannot be set individually, which leads to a reduction in the usable colorspace
- when switching to logarithmic scale the colorbar turns to black and white
- the min value is then set autmatically to the mininmum simulated value. I would like to use a fixed min and max value to compare different simulations.
Thank you for your time.
Kind Regards
Frederic Chill
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Dear Frederick,
I checked and everything is as you say. The min/max is deliberately the same, I believe a scale which changes linearity at 0 would be confusing.
The colorbar turns black and white at log values because the framework I use doesn't allow a negative / positive log scale display. Nevertheless it does the scaling correctly, between the smallest value corresponding to black, and the negative/positive parts of the scale following colors logarithmically. Implementing this correctly would be possible but I don't plan it as McCryoT was last used by us in 2012 (sorry).
Anyway, let me give you an advice just to check if you use it correctly:
- All surfaces should have Cosine desorption enabled
- Texture should count desorption AND absorption (absorption is counted positively and desorption negatively), unless you want to visualize only the emitted/received heat and not both
- All surfaces should then have their temperatures and emissivities assigned.
That's it. Good luck, Marton
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