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Heat pinch: Difference between revisions
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== Fick versus Fokker Planck == | == Fick versus Fokker Planck == | ||
Part of the problem may be due to the use of a ''Fickian'' transport equation, | Part of the problem may be due to the use of a ''Fickian'' transport equation, the use of which is only recommended in homogeneous systems. | ||
In inhomogenous systems (such as fusion plasmas), the ''Fokker-Planck'' formulation seems more appropriate. | In inhomogenous systems (such as fusion plasmas), the ''Fokker-Planck'' formulation seems more appropriate. | ||
<ref>[[doi:10.1088/0741-3335/47/12B/S56|B.Ph. van Milligen, B.A. Carreras and R. Sánchez, ''The foundations of diffusion revisited'', Plasma Phys. Control. Fusion '''47''' (2005) B743–B754]]</ref> | <ref>[[doi:10.1088/0741-3335/47/12B/S56|B.Ph. van Milligen, B.A. Carreras and R. Sánchez, ''The foundations of diffusion revisited'', Plasma Phys. Control. Fusion '''47''' (2005) B743–B754]]</ref> | ||