Module-based Simutation System(MSS) has been developed to realize a new software work enviroment enabling versatile dynamic simulation of a complex nuclear power system flexibly. The MSS makes full use of modern software technology to replace a large fraction of human software works in complex, large-scale program development by computer automation.
Fundamental methods utilized in MSS and developmental study on human interface system SESS-1 to help users in generating integrated simulation programs automatically are summarized as follows:
(1) To enhance usability and ¡Écommunality¡É of program resources, the basic mathematical models of common usage in nuclear power plant analysis are programed as ¡É modules¡É snd stored in a module library. The information on usage of individual modules are stored in module database with easy registration, update and retrieval by the interactive management system.
(2) Target simulation programs and the inpit/output files are automatically generated with simple block-wisr languages by a precompiler system for moudle integration purpose.
(3) working time for program development and analysis in an example study of an LMFBR plant thermal-hydraulic transient analysis was demonstrated to be remarkably shortend, with the introduction of an interface system sess-1 developed as an automatic program generation enviroment.