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Toroidal coordinates: Difference between revisions
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→Simple toroidal
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* ''Z'' = ''r'' sin ''θ'' | * ''Z'' = ''r'' sin ''θ'' | ||
''R<sub>0</sub>'' corresponds to the torus axis and is called the ''major radius'', while ''r'' is called the ''minor radius'', and ''θ'' the ''poloidal angle''. | ''R<sub>0</sub>'' corresponds to the torus axis and is called the ''major radius'', while ''r'' is called the ''minor radius'', and ''θ'' the ''poloidal angle''. | ||
In order to adapt this simple system better to the magnetic surfaces of an axisymmetric [[MHD equilibrium]], it may be enhanced by | |||
* letting ''R<sub>0</sub>'' depend on ''r'' (to account for the Shafranov shift of flux surfaces) | |||
* adding ellipticity (''ε''), triangularity (''κ''), etc. | |||
== Toroidal == | == Toroidal == | ||