一类满足FSAL技术的RKNd方法  

A CLASS OF RKNd METHOD SATISFIED FSAL TECHNIQUE

作　　者：翟文娟[1] 陈丙振[1] 

机构地区：[1]北京交通大学海滨学院,河北黄骅061100

出　　处：《计算数学》2013年第2期151-158,共8页Mathematica Numerica Sinica

摘　　要：陈丙振和游雄给出了内级阶比传统RK方法高一阶的RKNd方法.FSAL技术是一种常用的节省函数计算量的手段.其主要思想是,方法的更新与内级的最后一步相同,本文正是给出满足FSAL技术的RKNd方法.数值试验表明,本文的RKNdF方法比RKNd方法在计算效率上具有一定的优越性.Chen Bingzhen and You Xiong obtained RKNd methods whose internal stages one order higher than the traditional Runge-Kutta （RK） methods. FSAL technique is a commonly used method of saving function calculations. The main idea is its update is same as the last internal stage. This paper is mainly considered the RKNd methods satisfied FSAL technique. Numerical experiments accompanied show the superiority of RKNdF methods satisfied FSAL technique in efficiency to RKNd methods.

关 键 词：RKNd方法 FSAL技术 阶条件 效率 

分 类 号：O241.8[理学—计算数学]