Numerical simulation in unsteady-state running of the 45MW scale model SUPER-PHENIX steam generator

A 45 MW mock-up of SUPER-PHENIX steam generator was tested on the high power sodium-heated steam generator test loop (the C.G.V.S.). Running of the tests and analysis of the results were performed by the various parties interested in the development and construction of such units in France, viz. C.E.A., CREUSOT-LOIRE, EDF and NOVATOME. Digital simulation of the mock-up dynamic behaviour in the course of a number of operational tests under wide amplitude transient conditions was performed with a non-linear program i.e. the SICLE code. After a brief description of the mock-up and of the tests, an introduction is made of the computing code, followed by comments on the comparison between test and computation results. This comparison shows that digital simulation of the steam generator operation under transient conditions is very satisfactory: the maximum difference between the reckoned and the measured temperatures is 100C. (author)