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U.S. Department of Energy
Office of Scientific and Technical Information

Initial step for an ODE solver. [Method of selection]

Technical Report ·
OSTI ID:7125818

Every code for solving ordinary differential equations (ODE's) in a step-by-step manner must somehow obtain an initial step size. This step is a critical one because it is relatively easy for the code to select subsequent step sizes. Supplying an initial step size is an annoyance for the user at best, and it may result in an exceedingly bad value when the user does not know how to proceed. Problems with some previous methods for determining initial steps are discussed, and a new scheme is described which does not share earlier difficulties. (RWR)

Research Organization:
Sandia Labs., Albuquerque, NM (USA)
DOE Contract Number:
E(29-1)-789
OSTI ID:
7125818
Report Number(s):
SAND-77-0023
Country of Publication:
United States
Language:
English

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