[mesa-users] stellar-structural noise

[Alfred Gautschy]

> Okay. Thanks for the details.  The staggered mesh is probably irrelevant anyway since the wiggles 
> aren't impacted by changes in mesh resolution.
> 
Furthermore, the wiggles seem to unimpressed when modifying:
      set_HELM_OPAL_lgTs = .true.
      logT_all_HELM  = 6.1d0 ! HELM for lgT >= this    
      logT_all_OPAL  = 6.0d0 ! OPAL/SCVH for lgT <= this         

	see file: M010Z02_Useq_alphamesh0_5_EoSSwitch60To61.pdf

and 
      logT_all_HELM  = 7.1d0 ! HELM for lgT >= this    
      logT_all_OPAL  = 7.0d0 ! OPAL/SCVH for lgT <= this         

	see file: M010Z02_Useq_alphamesh0_5_EoSSwitch70To71.pdf

Despite the central regions of the diagram (particularly well seen by
the red dots, which show the U-values on the computational grid) being
computed with different EoS, the point distribution looks essentially
equal.  

Hence, different EoS treatments seem to be fine, i.e. leading to robust
results. That is something to build on! But I guess the next steps will
have to wait till tomorrow.

Regards, Alfred
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