[mesa-users] stellar-structural noise

[Bill Paxton]

Hi Alfred,

Curiouser and curiouser.   
It would be interesting to see separate plots of each of the terms going into U to see which ones wiggle! ;p

-B

On Oct 18, 2013, at 2:18 PM, Alfred Gautschy wrote:

> 
>> 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
> <M010Z02_Useq_alphamesh0_5_EoSSwitch60To61.pdf><M010Z02_Useq_alphamesh0_5_EoSSwitch70To71.pdf>