read_diffusion_coeffs.hpp File Reference

#include <string>
#include <stdexcept>
#include <vector>
#include "space_settings.hpp"
#include "xgc_io.hpp"
#include "domain_decomposition.hpp"

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Classes
struct	DiffusionCoeffData

Functions
DiffusionCoeffData	ReadDiffCoeffData (const DomainDecomposition< DeviceType > &pol_decomp, const int n_species, XGC_IO_Stream &stream)
	Reads diffusion coefficients for multiple particle species from an ADIOS2 BP file. More...

Function Documentation

ReadDiffCoeffData()

DiffusionCoeffData ReadDiffCoeffData	(	const DomainDecomposition< DeviceType > &	pol_decomp,
		const int	n_species,
		XGC_IO_Stream &	stream
	)

Reads diffusion coefficients for multiple particle species from an ADIOS2 BP file.

This function reads a common 1D x variable and four types of y variables, each having an additional species dimension. The y variable names are constructed from a base name and a species name using the convention: "<base>_<species>".

The base names are:

• "ptl_diffusivity"
• "ptl_pinch_velocity"
• "momentum_diffusivity"
• "heat_conductivity"

The species names are (in order):

• "elec", "ion", "imp_1", "imp_2", "imp_3", "imp_4", "imp_5"

The y data is stored in a 3D Kokkos::View with dimensions [4, n_species, N], where N is the length of the x variable obtained from the ADIOS2 file.

Parameters

ioName	Name of the ADIOS2 I/O object.
n_species	Number of particle species (must be between 1 and 7).
stream	XGC_IO_Stream for reading the diffusion coefficients.

Returns

AdiosSpeciesData containing the x variable and the 3D y variable.

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