Accession Number : AD0779839

Title :   A Second Order Runge-Kutta Integration Subroutine That Uses a Different Step-Size for Each Variable.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Toothman,Harold L.

Report Date : MAY 1974

Pagination or Media Count : 26

Abstract : The program was written to handle the numerical integration of initial value problems in which the frequency content of the variables differ considerably among themselves. In order to save computer time each variable is integrated with its own step-size so that the derivatives of the slowly changing variables are calculated less frequently than the derivatives of the rapidly changing variables. A second order Runge-Kutta method is used since high accuracy is not required. (Author)

Descriptors :   *Computer programs, *Boundary value problems, *Runge Kutta method, Subroutines, FORTRAN, Numerical integration

Subject Categories : Numerical Mathematics
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE