Main concepts and objectives of fuel performance modelling and code development
This paper describes the main concepts and purposes of fuel rod performance modelling and its contribution to the general improvement of nuclear fuel elements. Any such model must include a solution of the heat conduction equation and the principal mechanical equations i.e. for equilibrium and compatability, together with constitutive equations. The main source of uncertainty lies in the input data for local processes, since it is not known how local quantities such as pores, grain structure and stresses evolve during irradiation. The problem of determining fission gas release and swelling is particularly sensitive to changes in crack structure.
Bibliographic Reference: Paper presented: WWER Reactor Fuel Performance, Modelling and Experimental Support, Varna, St. Constantine (BG), November 7-11, 1994
Availability: Available from (1) as Paper EN 38804 ORA
Record Number: 199510132 / Last updated on: 1995-08-22
Original language: en
Available languages: en