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e482d71779
BREAKING CHANGE: Functionality is now provided by function calls and scheme generation is decoupled from LEqS solving.
73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
#ifndef DIFFUSION_H_
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#define DIFFUSION_H_
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#include "BoundaryCondition.hpp"
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#include <Eigen/Dense>
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#include <Eigen/Sparse>
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#include <array>
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#include <bits/stdint-uintn.h>
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#include <vector>
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namespace tug {
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namespace diffusion {
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/**
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* Defines grid dimensions and boundary conditions.
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*/
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typedef struct {
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uint32_t grid_cells[3];
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double domain_size[3];
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bc::BoundaryCondition *bc;
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} TugGrid;
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/**
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* Besides containing the grid structure it holds also information about the
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* desired time step to simulate and which solver to use.
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*/
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typedef struct {
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double time_step;
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Eigen::VectorXd (*solver)(Eigen::SparseMatrix<double>, Eigen::VectorXd);
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TugGrid grid;
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} TugInput;
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/**
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* Solving 1D diffusion problems with Backward Time Centred Space scheme.
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*
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* \param input_param Object with information for the simulation e.g. grid
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* dimensions, time step ...
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*
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* \param field Pointer to continious memory holding the concentrations for each
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* grid cell of the grid. It doesn't matter if stored in row (most likely) or
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* column major.
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*
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* \param alpha Pointer to continious memory holding the alpha for each grid
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* cell of the grid. (NOTE: only constant alphas are supported currently)
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*
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* \return Runtime in seconds
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*/
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auto BTCS_1D(const TugInput &input_param, double *field, const double *alpha)
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-> double;
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/**
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* Solving 2D diffusion problems with Alternating-direction implicit method.
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*
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* \param input_param Object with information for the simulation e.g. grid
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* dimensions, time step ...
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*
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* \param field Pointer to continious memory holding the concentrations for each
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* grid cell of the grid. It doesn't matter if stored in row (most likely) or
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* column major.
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*
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* \param alpha Pointer to continious memory holding the alpha for each grid
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* cell of the grid. (NOTE: only constant alphas are supported currently)
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*
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* \return Runtime in seconds
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*/
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auto ADI_2D(const TugInput &input_param, double *field, const double *alpha)
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-> double;
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} // namespace diffusion
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} // namespace tug
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#endif // DIFFUSION_H_
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