Package jline.solvers.fluid.handlers

Class MatrixMethodODE

java.lang.Object

jline.solvers.fluid.handlers.MatrixMethodODE

All Implemented Interfaces:

org.apache.commons.math3.ode.FirstOrderDifferentialEquations

public class MatrixMethodODE
extends Object
implements org.apache.commons.math3.ode.FirstOrderDifferentialEquations

Constructor Summary

Constructors

Constructor	Description
MatrixMethodODE(Matrix W, Matrix SQ, Matrix S, Matrix Qa, Matrix ALambda, int numDimensions, boolean[] isSourceState)
MatrixMethodODE(Matrix W, Matrix SQ, Matrix S, Matrix Qa, Matrix ALambda, int numDimensions, boolean[] isSourceState, NetworkStruct sn, List<Double> pStarValues)
MatrixMethodODE(Matrix W, Matrix SQ, Matrix S, Matrix Qa, Matrix ALambda, int numDimensions, boolean[] isSourceState, NetworkStruct sn, List<Double> pStarValues, FluidStateRateMultiplier stateMult)
MatrixMethodODE(Matrix W, Matrix SQ, Matrix S, Matrix Qa, Matrix ALambda, int numDimensions, boolean[] isSourceState, FluidStateRateMultiplier stateMult)

Method Summary

Modifier and Type	Method	Description
void	computeDerivatives(double t, double[] x, double[] dxdt)
int	getDimension()
void	setVarClosure(boolean[] infStates)	Turns on the variance-carrying saturation term and declares which states belong to INF stations, which carry no min() to close at all.
Matrix	theta(Matrix x)	The mass in service, i.e.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MatrixMethodODE

public MatrixMethodODE(Matrix W,
 Matrix SQ,
 Matrix S,
 Matrix Qa,
 Matrix ALambda,
 int numDimensions,
 boolean[] isSourceState)

MatrixMethodODE

public MatrixMethodODE(Matrix W,
 Matrix SQ,
 Matrix S,
 Matrix Qa,
 Matrix ALambda,
 int numDimensions,
 boolean[] isSourceState,
 FluidStateRateMultiplier stateMult)

Parameters:

stateMult - time-varying per-state rate multiplier, or null for the autonomous (constant-rate) ODE

MatrixMethodODE

public MatrixMethodODE(Matrix W,
 Matrix SQ,
 Matrix S,
 Matrix Qa,
 Matrix ALambda,
 int numDimensions,
 boolean[] isSourceState,
 NetworkStruct sn,
 List<Double> pStarValues)

MatrixMethodODE

public MatrixMethodODE(Matrix W,
 Matrix SQ,
 Matrix S,
 Matrix Qa,
 Matrix ALambda,
 int numDimensions,
 boolean[] isSourceState,
 NetworkStruct sn,
 List<Double> pStarValues,
 FluidStateRateMultiplier stateMult)

Parameters:

stateMult - time-varying per-state rate multiplier, or null for the autonomous (constant-rate) ODE

Method Details

computeDerivatives

public void computeDerivatives(double t,
 double[] x,
 double[] dxdt)
                        throws org.apache.commons.math3.exception.MaxCountExceededException,
org.apache.commons.math3.exception.DimensionMismatchException

Specified by:

computeDerivatives in interface org.apache.commons.math3.ode.FirstOrderDifferentialEquations

Throws:

org.apache.commons.math3.exception.MaxCountExceededException

org.apache.commons.math3.exception.DimensionMismatchException

setVarClosure

public void setVarClosure(boolean[] infStates)

Turns on the variance-carrying saturation term and declares which states belong to INF stations, which carry no min() to close at all.

theta

public Matrix theta(Matrix x)

The mass in service, i.e. theta(x) of Ruuskanen et al., PEVA 151 (2021): eq. (12) without smoothing, eq. (26)-(27) with an exponent set.

The analyzer reads the metrics off this same theta: eq. (23) takes the utilization from the share the ODE integrated, so U and T must not revert to the hard min() after a smoothed solve. The state multiplier is NOT applied here, since the throughput scales by it while the utilization does not.

getDimension

public int getDimension()

Specified by:

getDimension in interface org.apache.commons.math3.ode.FirstOrderDifferentialEquations