vcbferreira/NuFI_deal.ii
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problem identified, ready to converge all branches

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Vasco C. B. Ferreira
2026-03-21 10:20:08 +01:00
parent 986e5e19fb
commit d87058f9b5
6 changed files with 31 additions and 21 deletions
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libnufi_lib.a
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nufi/nufi_solver.h
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@@ -1,6 +1,7 @@
#ifndef NUFI_SOLVER_H #ifndef NUFI_SOLVER_H
#define NUFI_SOLVER_H #define NUFI_SOLVER_H
#include <boost/qvm/mat_access.hpp>
#include <vector> #include <vector>
#include <cmath> #include <cmath>
#include <deal.II/base/point.h> #include <deal.II/base/point.h>
@@ -30,6 +31,9 @@ private:
double Lx = Parameters::LX; double Lx = Parameters::LX;
double x_min = Parameters::X_DOMAIN_LEFT;
double x_max = Parameters::X_DOMAIN_RIGHT;
std::vector<double> rho; std::vector<double> rho;
unsigned int order; unsigned int order;
nufi/save_results.h
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@@ -23,4 +23,7 @@ void save_Efield(unsigned int n,
unsigned int Nx_out, unsigned int Nx_out,
const std::string &filename); const std::string &filename);
void save_space_vector(const std::vector<double>& vals, const std::string& filename, size_t it);
#endif #endif
rho_E.mp4
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src/nufi_solver.cc
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@@ -28,7 +28,7 @@ double NuFISolver::eval_ftilda(unsigned int n,
if ( n == 0 ) return f0(x,u); if ( n == 0 ) return f0(x,u);
const size_t stride_x = 1; const size_t stride_x = 1;
const size_t stride_t = stride_x*(Parameters::SPLINE_NX + Parameters::SPLINE_ORDER - 1); const size_t stride_t = stride_x*(Nx + Parameters::SPLINE_ORDER - 1);
double Ex; double Ex;
const double *c; const double *c;
@@ -81,7 +81,7 @@ void NuFISolver::run()
if ( rho == nullptr ) throw std::bad_alloc {}; if ( rho == nullptr ) throw std::bad_alloc {};
Gradient grad(Parameters::X_DOMAIN_LEFT, Parameters::X_DOMAIN_RIGHT, Parameters::SPLINE_NX); Gradient grad(x_min, x_max, Nx);
for (unsigned int it = 0; it < Nt; ++it) for (unsigned int it = 0; it < Nt; ++it)
{ {
@@ -99,28 +99,17 @@ void NuFISolver::run()
rho.get()[i] = ith_rho; rho.get()[i] = ith_rho;
} }
poisson.set_rhs_function(std::make_unique<ChargeDensity_NuFI<1>>(rho.get(), Parameters::SPLINE_NX)); poisson.set_rhs_function(std::make_unique<ChargeDensity_NuFI<1>>(rho.get(), Nx));
poisson.solve_step(); poisson.solve_step();
// std::vector<double> sampled_potential = poisson.sample_electric_potential(Parameters::X_DOMAIN_LEFT, Parameters::X_DOMAIN_RIGHT, Parameters::SPLINE_NX); std::vector<double> sampled_potential = poisson.sample_electric_potential(x_min, x_max, Nx);
// sampled_potential.erase(sampled_potential.begin()); save_space_vector(sampled_potential, "potential", it);
// sampled_potential.erase(sampled_potential.end()-1);
// std::vector<double> E_vals = grad.compute(sampled_potential);
// std::ofstream file("results/potential_" + std::to_string(it) + ".dat"); // std::vector<double> E_vals = poisson.sample_electric_field(x_min, x_max, Nx);
// file << sampled_potential.size() << "\n";
// file << Parameters::X_DOMAIN_LEFT << " " << Parameters::X_DOMAIN_RIGHT << "\n"; save_space_vector(E_vals, "electric", it);
// file << std::fixed << std::setprecision(8);
// for (double val : sampled_potential) file << val << "\n";
//
//
// std::vector<double> E_vals = grad.compute(sampled_potential);
std::vector<double> E_vals = poisson.sample_electric_field(Parameters::X_DOMAIN_LEFT, Parameters::X_DOMAIN_RIGHT,Parameters::SPLINE_NX);
std::ofstream file("results/potential_" + std::to_string(it) + ".dat");
file << E_vals.size() << "\n";
file << Parameters::X_DOMAIN_LEFT << " " << Parameters::X_DOMAIN_RIGHT << "\n";
file << std::fixed << std::setprecision(8);
for (double val : E_vals) file << val << "\n";
double* current_coeffs = coeffs.get() + it*stride_t; double* current_coeffs = coeffs.get() + it*stride_t;
interpolate<double, Parameters::SPLINE_ORDER>(current_coeffs, E_vals.data()); interpolate<double, Parameters::SPLINE_ORDER>(current_coeffs, E_vals.data());
src/save_results.cc
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@@ -2,7 +2,9 @@
#include "nufi/parameters.h" #include "nufi/parameters.h"
#include <fstream> #include <fstream>
#include <stdexcept>
#include <string> #include <string>
#include <vector>
#include "nufi/nufi_solver.h" #include "nufi/nufi_solver.h"
@@ -102,3 +104,15 @@ void save_Efield(unsigned int n,
} }
file.close(); file.close();
} }
void save_space_vector(const std::vector<double>& vals, const std::string& filename, size_t it)
{
std::ofstream file("results/" + filename + "_" + std::to_string(it) + ".dat");
if (!file) throw std::runtime_error("failed to start file in results/");
file << vals.size() << "\n";
file << Parameters::X_DOMAIN_LEFT << " " << Parameters::X_DOMAIN_RIGHT << "\n";
file << std::fixed << std::setprecision(8);
for (double val : vals) file << val << "\n";
}