...
首页> 外文期刊>SIAM Journal on Numerical Analysis >A general procedure for the adaptation of multistep algorithms to the integration of oscillatory problems
【24h】

A general procedure for the adaptation of multistep algorithms to the integration of oscillatory problems

机译:使多步算法适应振荡问题的通用程序

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

This paper introduces a general technique for the construction of multistep methods capable of integrating, without local truncation error, homogeneous linear ODEs with constant coefficients, including those, in particular, that result in oscillatory solutions. Moreover, these methods can be further adapted through coefficient modification for the exact integration of forced oscillations in one or more frequencies, even confluent ones that occur from nonhomogeneous terms in the differential equation. Our procedure allows the derivation of many of the existing codes with similar properties, as well as the improvement of others that in their original design were only able to integrate oscillations in a single frequency. The properties of the methods are studied within a general framework, and numerical examples are presented. These demonstrate the way in which the new algorithms perform distinctly better than the general purpose codes, particularly when integrating the class of equations with perturbed oscillatory solutions. The methods developed are mainly applicable to the accurate and efficient integration of problems for which the oscillation frequencies are known, as occurs in satellite orbit propagation. The underlying ideas have already been applied to the improvement of some Chebyshev methods that are not multistep. [References: 59]
机译:本文介绍了一种构建多步方法的通用技术,该方法能够在没有局部截断误差的情况下集成具有恒定系数的齐次线性ODE,尤其是那些导致振荡解的常数。此外,这些方法还可以通过系数修改进一步调整,以在一个或多个频率(甚至是由微分方程中的非均匀项产生的融合频率)中精确积分强制振荡。我们的程序允许推导许多具有相似特性的现有代码,并对其他代码进行改进,使它们在其原始设计中只能在单个频率上集成振荡。在通用框架内研究了这些方法的性质,并给出了数值示例。这些证明了新算法的性能明显优于通用代码,特别是在将方程类与扰动的振动解集成时。所开发的方法主要适用于精确已知的问题,如在卫星轨道传播中发生的振荡频率已知问题。潜在的思想已经被应用于一些不是多步的切比雪夫方法的改进。 [参考:59]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号