Study on method of plant simulation under distributed cooperative calculation

A new algorithm has been proposed for one-dimensional liquid dynamics has been proposed, which is indispensable in design and estimation of complex and large-scale fluid circulation systems like nuclear power plants. This algorithm, with no need for matrix calculation in the contrast with the conventional approach, has been validated on an equipment piping configuration to a FBR secondary heat transport system, to demonstrate that increase of CPU load due to iterative process in hydraulic calculation to reach convergence in each time step is enough small to retain the inherent advantage of this algorithm such as capability to follow dynamic configuration change of the piping network. This approach enables to easily build whole plant model capable to handle in continuous configuration changes such as piping ruptures and isolations, to suggest potential in enhancing plant simulation flexibility. (author)