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Interpolation scheme midpoint vs linear

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Old   October 15, 2008, 09:53
Default Hi Foamers, does anybody ha
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Stephan Gerber
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Hi Foamers,

does anybody has an idea what is the difference of the two schemes mentioned in the caption of this thread?!


Thanks for help!
regards
stephan
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Old   October 15, 2008, 10:48
Default Hi Stephan, Linear takes into
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diablo80@web.de
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Hi Stephan,
Linear takes into account the distances between cell centers and faces. The weight attributed to each adjacent center is inversely proportional to the distance to the face.
Midpoint weights equally the two adjacent values (as 0.5*PhiA + 0.5*PhiB).

Cheers,
luiz
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Old   October 15, 2008, 11:27
Default Hi Luiz, thanks for the ans
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Stephan Gerber
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Hi Luiz,

thanks for the answer.
do you have any idea how the third coefficient of the cubic polynomial is calculated in case of cubic interpolation scheme?

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stephan
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Old   October 16, 2008, 02:33
Default hi, i guess it was too late
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Stephan Gerber
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hi,

i guess it was too late yesterday: i was asking for the third and fourth coefficient of the polynomial...
(i guess the first two should be fixed by the value at the cell centres)
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