MURGATROYD-AN IBM 7090 PROGRAM FOR THE ANALYSIS OF THE KINETICS OF THE MSRE

Technical Report · Sun Apr 01 04:00:00 EST 1962

DOI:https://doi.org/10.2172/4786415· OSTI ID:4786415

Nestor, Jr, C W

The IBM 7090 program Murgatroyd is a revised and extended version of the IBM 704 program PET-I, which solves (by a fifth-order Runge-Kutta procedure) the coupled firstorder differential equations for power, delayed neutron concentration, and temperature in a one-region reactor as a function of time, given an input reactivity variation represented by a series of linear ramps. The basic extensions were those which were necessary to include the effects of the separate heat capacities and temperature coefficients of the fuel sait and graphite in the MSRE, and of heat transfer between the fuel and graphite. In addition, the input and output sections of the previous program were modified to facilitate the use of the program in extensive parameter studies, and a calculation of the pressure rise in the core was included. Typical running times are of the order of l2 milliseconds per time step; a calculation of a 30-second power history using a 10 millisecond time step requires about 36 seconds of machine time. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-16-017239
• OSTI ID: 4786415
• Report Number(s): ORNL-TM-203
• Country of Publication: United States
• Language: English

Related Subjects

COMPUTERS
DELAYED NEUTRONS
DIFFERENTIAL EQUATIONS
FUSED SALT FUEL
GRAPHITE MODERATOR
HEAT TRANSFER
MSRE
PRESSURE
PROGRAMMING
QUANTITY RATIO
REACTIVITY
REACTOR CORE
REACTOR KINETICS
REACTOR TECHNOLOGY
REACTORS
TEMPERATURE
VARIATIONS