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nufi working, dealii solves poisson, E saved as independent spline

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Vasco C. B. Ferreira
2026-04-09 17:27:41 +02:00
parent 47a97f7a7c
commit ee8a7dbaf5
7 changed files with 36 additions and 25 deletions
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nufi/fields.h
+6 -6
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@@ -47,19 +47,19 @@ double eval(double x, const double *coeffs) noexcept
x -= Parameters::X_DOMAIN_LEFT;
// Get "periodic position" in box at origin.
x = x - Parameters::LX * floor( x/Parameters::LX );
x = x - Parameters::LX * floor( x*Parameters::LX_INV );
// Knot number
double x_knot = floor( x/Parameters::SPLINE_DX);
double x_knot = floor( x*Parameters::SPLINE_DX_INV);
size_t ii = static_cast<size_t>(x_knot);
// Convert x to reference coordinates.
x = x/Parameters::SPLINE_DX - x_knot;
x = x*Parameters::SPLINE_DX_INV - x_knot;
// Scale according to derivative.
double factor = 1;
for ( size_t i = 0; i < dx; ++i ) factor *= 1/Parameters::SPLINE_DX;
for ( size_t i = 0; i < dx; ++i ) factor *= 1*Parameters::SPLINE_DX_INV;
return factor*splines1d::eval<double,Parameters::SPLINE_ORDER,dx>(x, coeffs + ii);
}
@@ -142,7 +142,7 @@ void interpolate( real *coeffs, const real *values)
coeffs[ i ] = tmp[ i % Parameters::SPLINE_NX ];
}
double integral_space_vector(const double *current_coeffs, double dx = Parameters::SPLINE_DX, size_t Nx = Parameters::SPLINE_NX)
inline double integral_space_vector(const double *current_coeffs, double dx = Parameters::SPLINE_DX, size_t Nx = Parameters::SPLINE_NX)
{
double integral = 0.0;
double x = Parameters::X_DOMAIN_LEFT;
@@ -153,7 +153,7 @@ double integral_space_vector(const double *current_coeffs, double dx = Parameter
return integral;
};
double integral_space_vector_squared(const double *current_coeffs, double dx = Parameters::SPLINE_DX, size_t Nx = Parameters::SPLINE_NX)
inline double integral_space_vector_squared(const double *current_coeffs, double dx = Parameters::SPLINE_DX, size_t Nx = Parameters::SPLINE_NX)
{
double integral = 0.0;
double x = Parameters::X_DOMAIN_LEFT;
nufi/parameters.h
+9 -6
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@@ -11,11 +11,13 @@ namespace Parameters
constexpr double X_DOMAIN_LEFT = 0.0;
constexpr double X_DOMAIN_RIGHT = 4*M_PI;
constexpr double LX = std::abs(X_DOMAIN_RIGHT- X_DOMAIN_LEFT);
constexpr double LX_INV = 1/LX;
constexpr double V_DOMAIN_LEFT = -10.0;
constexpr double V_DOMAIN_RIGHT = 10.0;
constexpr unsigned int NV = 562;
constexpr unsigned int NV = 512;
constexpr double DV = std::abs(V_DOMAIN_RIGHT - V_DOMAIN_LEFT)/NV;
// deal.ii options
constexpr unsigned int GLOBAL_REFINEMENT = 7;
@@ -25,15 +27,16 @@ namespace Parameters
constexpr double EPS = 0.01;
constexpr double WAVE_NR = 0.5;
constexpr double F0_FACTOR = 0.39894228040143267793994;
constexpr double F0_FACTOR = 0.39894228040143267793994; // 1/sqrt(2pi)
// NUFI options
constexpr double DT=1./16.;
constexpr unsigned int TMAX = 20;
constexpr double DT=1./10.;
constexpr unsigned int TMAX = 50;
//spline options
constexpr int SPLINE_NX = 562;
constexpr double SPLINE_DX = LX/(SPLINE_NX-1);
constexpr int SPLINE_NX = 256;
constexpr double SPLINE_DX = LX/(SPLINE_NX);
constexpr double SPLINE_DX_INV = 1/SPLINE_DX;
constexpr size_t SPLINE_ORDER = 4;
//Plotting options
nufi/splines.h
+2 -2
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@@ -1,5 +1,5 @@
#ifndef SPLINES_H
#define SPLINES_H
#ifndef SPLINES_HP
#define SPLINES_HP
#include <cstddef>