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Triangularity: Difference between revisions
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* ''R<sub>down</sub>'' is the major radius of the lower X-point (in case it exists) or of the lowest vertical point of the LCFS. | * ''R<sub>down</sub>'' is the major radius of the lower X-point (in case it exists) or of the lowest vertical point of the LCFS. | ||
The upper triangularity is then defined as follows: | The upper triangularity is then defined as follows: | ||
:<math> \ | :<math> \delta_{up} = (R_0-R_{up})/a</math> | ||
and similar for & | and similar for δ<sub>down</sub>. | ||
The overall triangularity is defined as the mean of & | The overall triangularity is defined as the mean of δ<sub>up</sub> and δ<sub>down</sub>. | ||
== See also == | == See also == | ||
* [[Ellipticity]] | * [[Ellipticity]] | ||
* [[Toroidal coordinates]] | |||