MRKISS 2025-09-10
A tiny library with zero dependencies that aims to make it easy to use & experiment with explicit Runge-Kutta methods.
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mrkiss_eerk_verner_8_7 Module Reference

Butcher tableau for Verner's 13 stage, Order (8,7) Runge-Kutta method. More...

Variables

integer, parameter s = 13
 The order of the overall method.
integer, parameter m = 2
 Number of methods.
real(kind=rk), dimension(s, s), parameter a
 The \(\mathbf{a}\) matrix for the Butcher Tableau.
real(kind=rk), dimension(s, m), parameter b
 The \(\mathbf{b}\) matrix for the Butcher Tableau.
real(kind=rk), dimension(s), parameter c
 The \(\mathbf{c}\) matrix for the Butcher Tableau.
integer, dimension(m), parameter p = [8, 7]
 The method orders.
integer, dimension(m), parameter se = [12, 13]
 Number of stages for each method.

Detailed Description

Butcher tableau for Verner's 13 stage, Order (8,7) Runge-Kutta method.

IMO
This is my go-to O(8,7) method.
Known Aliases
'ARKODE_VERNER_13_7_8' (SUNDIALS).
Stability Image Links
References:

Variable Documentation

◆ s

integer, parameter mrkiss_eerk_verner_8_7::s = 13

The order of the overall method.

Definition at line 65 of file mrkiss_eerk_verner_8_7.f90.

◆ m

integer, parameter mrkiss_eerk_verner_8_7::m = 2

Number of methods.

Definition at line 67 of file mrkiss_eerk_verner_8_7.f90.

◆ a

real(kind=rk), dimension(s,s), parameter mrkiss_eerk_verner_8_7::a

The \(\mathbf{a}\) matrix for the Butcher Tableau.

Definition at line 69 of file mrkiss_eerk_verner_8_7.f90.

◆ b

real(kind=rk), dimension(s,m), parameter mrkiss_eerk_verner_8_7::b

The \(\mathbf{b}\) matrix for the Butcher Tableau.

Definition at line 83 of file mrkiss_eerk_verner_8_7.f90.

◆ c

real(kind=rk), dimension(s), parameter mrkiss_eerk_verner_8_7::c

The \(\mathbf{c}\) matrix for the Butcher Tableau.

Definition at line 86 of file mrkiss_eerk_verner_8_7.f90.

◆ p

integer, dimension(m), parameter mrkiss_eerk_verner_8_7::p = [8, 7]

The method orders.

Definition at line 90 of file mrkiss_eerk_verner_8_7.f90.

◆ se

integer, dimension(m), parameter mrkiss_eerk_verner_8_7::se = [12, 13]

Number of stages for each method.

Definition at line 92 of file mrkiss_eerk_verner_8_7.f90.