jxbforce.f90 File Reference

Program for computing local \(\mathbf{K} \times \mathbf{B} = \nabla p\) force balance. More...

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Functions/Subroutines
subroutine	jxbforce (bsupu, bsupv, bsubu, bsubv, bsubsh, bsubsu, bsubsv, gsqrt, bsq, itheta, izeta, brho, ier_flag)
	Program for computing local \(\mathbf{K} \times \mathbf{B} = \nabla p\) force balance.

Detailed Description

Program for computing local \(\mathbf{K} \times \mathbf{B} = \nabla p\) force balance.

Definition in file jxbforce.f90.

Function/Subroutine Documentation

jxbforce()

subroutine jxbforce	(	real(rprec), dimension(ns,nznt), intent(in)	bsupu,
		real(rprec), dimension(ns,nznt), intent(in)	bsupv,
		real(rprec), dimension(ns,nznt,0:1), intent(inout), target	bsubu,
		real(rprec), dimension(ns,nznt,0:1), intent(inout), target	bsubv,
		real(rprec), dimension(ns,nznt), intent(in)	bsubsh,
		real(rprec), dimension(ns,nznt,0:1)	bsubsu,
		real(rprec), dimension(ns,nznt,0:1)	bsubsv,
		real(rprec), dimension(ns,nznt), intent(in)	gsqrt,
		real(rprec), dimension(ns,nznt), intent(in)	bsq,
		real(rprec), dimension(ns,nznt), intent(out)	itheta,
		real(rprec), dimension(ns,nznt), intent(out)	izeta,
		real(rprec), dimension(ns,nznt), intent(out)	brho,
		integer, intent(in)	ier_flag )

Program for computing local \(\mathbf{K} \times \mathbf{B} = \nabla p\) force balance.

Parameters

bsupu	contravariant component of magnetic field \(B^\theta\)
bsupv	contravariant component of magnetic field \(B^\zeta\)
bsubu	covariant component of magnetic field \(B_\theta\)
bsubv	covariant component of magnetic field \(B_\zeta\)
bsubsh	covariant component of magnetic field \(B_s\) on half grid from bss()
bsubsu	tangential derivate of covariant component of magnetic field \(\partial B_s / \partial \theta\) (?)
bsubsv	tangential derivate of covariant component of magnetic field \(\partial B_s / \partial \zeta\) (?)
gsqrt	Jacobian \(\sqrt{g}\)
bsq	modulus of magnetic field \(|\mathbf{B}|^2\)
itheta	poloidal current
izeta	toroidal current
brho	radial component of magnetic field \(B_\rho\) (?)
ier_flag	error flag

Definition at line 19 of file jxbforce.f90.

References vmec_main::bdotb, vmec_main::bdotgradv, fext_fft(), fsym_fft(), fsym_invfft(), getbsubs(), realspace::guu, realspace::guv, realspace::gvv, vmec_main::iotas, vmec_main::jdotb, vmec_main::jpar2, vmec_main::jperp2, mercier(), vmec_params::mnyq, vmec_params::nnyq, vmec_main::ohs, dbgout::open_dbg_context(), vmec_main::phi, realspace::phip, vmec_main::phips, vmec_main::pres, vmec_main::r0scale, realspace::r1, realspace::ru, realspace::rv, realspace::shalf, vmec_params::signgs, vmec_params::successful_term_flag, vmec_main::vp, realspace::wint, realspace::zu, and realspace::zv.

Referenced by eqfor().

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