Volume preservation by Runge-Kutta methods

被引:3
作者
Bader, Philipp [1 ]
McLaren, David I. [1 ]
Quispel, G. R. W. [1 ]
Webb, Marcus [2 ]
机构
[1] La Trobe Univ, Dept Math & Stat, Bundoora, Vic 3086, Australia
[2] Univ Cambridge, DAMTP, Wilberforce Rd, Cambridge CB3 0WA, England
基金
澳大利亚研究理事会; 英国工程与自然科学研究理事会;
关键词
Volume preservation; Runge-Kutta method; Measure preservation; Kahan's method; DYNAMICAL-SYSTEMS; GEOMETRIC INTEGRATION;
D O I
10.1016/j.apnum.2016.06.010
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
It is a classical theorem of Liouville that Hamiltonian systems preserve volume in phase space. Any symplectic Runge-Kutta method will respect this property for such systems, but it has been shown by Iserles, Quispel and Tse and independently by Chartier and Murua that no B-Series method can be volume preserving for all volume preserving vector fields. In this paper, we show that despite this result, symplectic Runge-Kutta methods can be volume preserving for a much larger class of vector fields than Hamiltonian systems, and discuss how some Runge-Kutta methods can preserve a modified measure exactly. (C) 2016 IMACS. Published by Elsevier B.V. All rights reserved.
引用
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页码:123 / 137
页数:15
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