public void Calc()
{
ClassicRungeKuttaIntegrator rk4 = new ClassicRungeKuttaIntegrator();
rk4.DifferentialFunction = Lorentz;
rk4.InitialTime = 0;
rk4.InitialStepsize = 0.1;
rk4.InitialValue = Vector.Create(ExampleModel.CA0, ExampleModel.CB0, ExampleModel.CC0, ExampleModel.V0, ExampleModel.T0, ExampleModel.Tct0, ExampleModel.Wb0);
for (int i = 0; i <= 8000; i++)
{
double t = 0.001 * i;
var y = rk4.Integrate(t);
}
}
public static void Calculate()
{
j = 0;
T = new double[cCO.Length];
W = new double[cCO.Length];
var rk4 = new ClassicRungeKuttaIntegrator();
rk4.DifferentialFunction = FisherTropsh;
rk4.InitialTime = 0;
rk4.StepSize = 1;
rk4.InitialValue = Vector.Create(T0, Wvh);
for (int i = 0; i < cCO.Length; i++)
{
var y = rk4.Integrate(i);
T[i] = y[0];
W[i] = y[1];
j++;
}
}
public Dictionary <DataPoint, DataPoint> Solve()
{
ClassicRungeKuttaIntegrator rk4 = new ClassicRungeKuttaIntegrator();
var points = new Dictionary <DataPoint, DataPoint>();
rk4.DifferentialFunction = Lorentz;
rk4.InitialTime = 0.0;
rk4.InitialValue = Vector.Create(0.0, 0.0);
rk4.InitialStepsize = 0.1;
for (double point = startPoint; point <= 30.0; point += step)
{
var y = rk4.Integrate(point);
points.Add(new DataPoint(point, y[0]), new DataPoint(point, y[1]));
}
return(points);
}
static void Main(string[] args)
{
ClassicRungeKuttaIntegrator rk4 = new ClassicRungeKuttaIntegrator();
// The differential equation is expressed in terms of a
// DifferentialFunction delegate. This is a function that
// takes a double (time value) and two Vectors (y value and
// return value) as arguments.
//
// The Lorentz function below defines the differential function
// for the Lorentz attractor.
rk4.DifferentialFunction = Lorentz;
// To perform the computations, we need to set the initial time...
rk4.InitialTime = 0.0;
// and the initial value.
rk4.InitialValue = Vector.Create(1.0, 0.0, 0.0);
// The Runge-Kutta integrator also requires a step size:
rk4.InitialStepsize = 0.1;
//rk4.
Console.WriteLine("Classic 4th order Runge-Kutta");
for (int i = 0; i <= 5; i++)
{
double t = 0.2 * i;
// The Integrate method performs the integration.
// It takes as many steps as necessary up to
// the specified time and returns the result:
var y = rk4.IntegrateSingleStep(t);
// The IterationsNeeded always shows the number of steps
// needed to arrive at the final time.
Console.WriteLine("{0:F2}: {1,20:F14} ({2} steps)", t, y, rk4.IterationsNeeded);
}
//ExampleModel.V0 = 6;
//ExampleModel.Wbbx = 1;
//ExampleModel.CA0 = 10;
//ExampleModel.CB0 = 0;
//ExampleModel.CC0 = 0;
//ExampleModel.Cbbx = 10;
//ExampleModel.Tbx = 15 + 273;
//ExampleModel.T0 = 293;
//ExampleModel.Tct0 = 18 + 273;
//ExampleModel.Tzad = 293;
//ExampleModel.Kprop = 0.02;
//ExampleModel.TimeIzod = 100;
//ExampleModel.Wb0 = 1;
//ExampleModel.Cpc = 4.18;
//ExampleModel.Cp = 4.14;
//ExampleModel.r0 = 1000;
//ExampleModel.Wxl = 10;
//ExampleModel.Voxl = 0.5;
//ExampleModel.Ktp = 10000;
//ExampleModel.D = 2;
//ExampleModel.K0 = 8 * Math.Pow(10, 17);
//ExampleModel.delH = 30000;
//ExampleModel.Eact = 22000;
//var ex = new Example();
//ex.Calc();
//public const double Esh = 1181;
//public const double Eft = 118.1;
//public const double Ksh = 0.0000000001;
//public const double Kft = 0.001;
//var constants = new ConstantInputModel
//{
// K1 = 8.8073 * Math.Pow(10, 6),
// K2 = 13.66 * Math.Pow(10, 6),
// K3 = 48.502 * Math.Pow(10, 6),
// K4 = 68.763 * Math.Pow(10, 6),
// K5 = 22.097 * Math.Pow(10, 6),
// K = 17.838 * Math.Pow(10, 6),
// B1 = -769.491,
// B2 = -424.565,
// B3 = 636.999,
// B4 = 746.846,
// B5 = 95.8691,
// B = 427.218,
// B0 = 1.0298 * Math.Pow(10, -3),
// Eft = 136.1,
// Esh = 1181,
// Kft = 0.001,
// Ksh = 0.000000001
//};
//var component = new FiniteComponentInputModel
//{
// Alfa = 0.4,
// Density = 600,
// EndTime = 100,
// G1 = 4,
// G2 = 28,
// Gama = 0,
// M = 50,
// T = 400
//};
//var reactor = new FiniteComponentReactor(constants, component);
//reactor.StartCalc();
}