speccoords Module Reference

Fortran module for SPEC problems, computing geometry relevant quantities. More...

Functions/Subroutines
subroutine	get_xyz (stz, rpz)
	Compute Cartisian coordinates based on toroidal coordinates \((s,\theta,\zeta)\).
subroutine	get_metric_interface (ioi, theta, zeta, dr, dz, guvij, sg, ideriv)

Detailed Description

Fortran module for SPEC problems, computing geometry relevant quantities.

SPEC coordinates

• Igeometry=1, slab geometry \( \mathbf{x} = R(\theta, \zeta) \mathbf{i} + \mbox{rpol} \times \theta \mathbf{j} + \mbox{rtor} \times \zeta \mathbf{j} \)

  get_xyz returns \((R, \mbox{dummy}, \mbox{dummy}) \)

• Igeometry=2, cylindrical geometry

  Something

• Igeometry=3, toroidal geometry

Function/Subroutine Documentation

get_metric_interface()

subroutine speccoords::get_metric_interface	(	integer, intent(in)	ioi,
		real(kind=real_kind), intent(in)	theta,
		real(kind=real_kind), intent(in)	zeta,
		real(kind=real_kind), dimension(0:3,0:3,0:3), intent(out)	dr,
		real(kind=real_kind), dimension(0:3,0:3,0:3), intent(out)	dz,
		real(kind=real_kind), dimension(3,3,0:2), intent(out)	guvij,
		real(kind=real_kind), dimension(0:2), intent(out)	sg,
		integer, intent(in)	ideriv )

get_xyz()

subroutine speccoords::get_xyz	(	real(kind=real_kind), dimension(1:3), intent(in)	stz,
		real(kind=real_kind), dimension(1:3), intent(out)	rpz )

Compute Cartisian coordinates based on toroidal coordinates \((s,\theta,\zeta)\).

Parameters

[in]	stz	\((s,\theta,\zeta)\)
[out]	rpz	the Cartesian coordinates, depending on Igeometry