alma::analytic1D::psi_calculator Class Reference

Class for computing the RTA propagator function psi(xi) of a medium. More...

#include <analytic1d.hpp>

Public Member Functions
	psi_calculator (const alma::Crystal_structure *poscar, const alma::Gamma_grid *grid, const Eigen::ArrayXXd *w, double T)
	Constructor: initialise internal variables.
void	setDirection (const Eigen::Vector3d unitvector)
	Function setting the thermal transport axis.
void	setLinGrid (double ximin, double ximax, int Nxi)
	Construct a linear grid of spatial frequencies from ximin to ximax with Nxi elements.
void	setLogGrid (double ximin, double ximax, int Nxi)
	Construct a logarithmic grid of spatial frequencies from ximin to ximax with Nxi elements.
void	setXiGrid (const Eigen::Ref< const Eigen::VectorXd > xigrid)
	Manually set a grid of spatial frequencies.
Eigen::VectorXd	getSpatialFrequencies ()
	Retrieve the spatial frequency grid.
void	normaliseOutput (bool norm)
	Determine whether computation output should be normalised by the Fourier solution Dbulk*xi^2.
double	getDiffusivity ()
	Obtain Fourier diffusivity of the medium.
Eigen::VectorXd	getPsi ()
	Compute psi function and retrieve it.

Detailed Description

Class for computing the RTA propagator function psi(xi) of a medium.

The psi function fully determines the analytical single pulse response of the infinite bulk in weakly quasi-ballistic regime (time scales exceeding phonon relaxation times): Energy density in Fourier-Laplace domain = 1/[s + psi(xi)] Energy density in Fourier-time domain = exp[-psi(xi)*t]

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The documentation for this class was generated from the following files:

• analytic1d.hpp
• analytic1d.cpp