Odd calculated deco "ripples" (was Re: RFC: color change for calculated deco)

[Robert C. Helling]

On Jan 12, 2013, at 10:30 PM, Linus Torvalds wrote:

Linus,

> Any ideas? I don't think the ripples *matter* (they are not a big
> effect), but I'd like to understand why they exist. The last time we
> had odd effects in the deco graph, it was because the deco
> calculations were wrong.

Hmm. I see the ripples and my first ideas about their origin were wrong (the guiding compartment does nothing fancy and what what goes into add_segment() does look completely normal as well, I had thought that the gas mix might jump but it does not). The ripples are still there with GFhigh=GFlow=100% i.e. plain vanilla Buehlmann, so the gradient factor stuff is not the origin either.

Understanding this requires more time than I have right now. But I will come back to this as soon as possible.

Best
Robert

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Robert C. Helling     Elite Master Course Theoretical and Mathematical Physics  
                      Scientific Coordinator                                   
                      Ludwig Maximilians Universitaet Muenchen, Dept. Physik    
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