OpenFUSIONToolkit.ThinCurr.meshing Namespace Reference

Detailed Description

ThinCurr utilities for mesh generation and manipulation.

Authors

Chris Hansen

Date

March 2024

Classes
class	ThinCurr_periodic_toroid
	Helper class for working with periodic toroid models. More...

Functions
	build_regcoil_grid (filename, field_suffix, ntheta, nphi, full_torus=False)
	Build a uniform grid from a REGCOIL definition.
	build_ThinCurr_dummy (center, size=1.0, nsplit=0)
	Build simple square dummy mesh for ThinCurr (1 active node)
	build_torus_bnorm_grid (filename, nsample, nphi, resample_type='theta', use_spline=False)
	Build a uniform grid from a toroidal surface B-norm definition file.
	build_triangles_from_grid (data_grid, wrap_n=True, wrap_m=True)
	Build triangles from a uniform grid of points.
	write_ThinCurr_mesh (filename, r, lc, reg, holes=[], closures=[], pmap=None, nfp=None)
	Create a native HDF5 mesh file for ThinCurr from the given mesh information.

Function Documentation

build_regcoil_grid()

build_regcoil_grid	(		filename,
			field_suffix,
			ntheta,
			nphi,
			full_torus = False
	)

Build a uniform grid from a REGCOIL definition.

Parameters

field_suffix	Suffix for netCDF fields (eg. "plasma" or "coil")
ntheta	Number of points in the \( \theta \) (poloidal) direction
nphi	Number of points (per field period) in the \( \phi \) (toroidal) direction
full_torus	Construct grid for the full torus (default: one field period)

Returns

rgrid Structed phi-theta grid of points [nphi,ntheta,3], nfp Number of field periods

build_ThinCurr_dummy()

build_ThinCurr_dummy	(		center,
			size = 1.0,
			nsplit = 0
	)

Build simple square dummy mesh for ThinCurr (1 active node)

Parameters

center	Center of mesh [3]
size	Physical size of dummy mesh in X and Y
nsplit	Number of refinement iterations to perform on grid (starting mesh is np=5, nc=4)

Returns

r Point list [:,3], lc Cell list [:,3]

build_torus_bnorm_grid()

build_torus_bnorm_grid	(		filename,
			nsample,
			nphi,
			resample_type = 'theta',
			use_spline = False
	)

Build a uniform grid from a toroidal surface B-norm definition file.

Parameters

filename	Filename of B-norm poloidal mode definition
nsample	Number of points in the \( \theta \) (poloidal) direction
nphi	Number of points in the \( \phi \) (toroidal) direction
resample_type	Construct grid for the full torus (default: one field period)
use_spline	Fit a spline to the boundary to produce a smoother representation?

Returns

rgrid Structed phi-theta grid of points [nphi,ntheta,3], bnorm Bn on same grid [nphi,ntheta], nfp Number of field periods

build_triangles_from_grid()

build_triangles_from_grid	(		data_grid,
			wrap_n = True,
			wrap_m = True
	)

Build triangles from a uniform grid of points.

Parameters

data_grid	Uniform point grid [n,m,3]
wrap_n	Wrap grid in n-direction?
wrap_m	Wrap grid in m-direction?

Returns

point list [n*m,3], cell list [nc,3], nodeset in the n-direction, nodeset in the m-direction

write_ThinCurr_mesh()

write_ThinCurr_mesh	(		filename,
			r,
			lc,
			reg,
			holes = [],
			closures = [],
			pmap = None,
			nfp = None
	)

Create a native HDF5 mesh file for ThinCurr from the given mesh information.

Parameters

filename	Filename for mesh file
r	Points list [np,3]
lc	Cell list [nc,3] (1-based)
reg	Region list [nc]
holes	List of node sets for hole definitions
closures	List of closures
pmap	Point mapping for periodic meshes (single surface only)
nfp	Number of field periods for periodic meshes (single surface only)