MORSE

MORSE: Reactor Dynamical Aspects of Model Order Reduction of Dynamical Systems

Brief Description

The increasing need for a high level of detail of simulations of technical systems requires large computer codes that are more and more difficult to handle. In order to, nevertheless, be able to obtain results regarding the qualitative behavior of a dynamical system and to reduce computing as well as memory cost, model order reduction techniques are employed. These techniques try to reduce the order of the dynamical system without losing the capability to predict selected aspects of the underlying system correctly.

In the field of reactor safety research these methods are currently rarely used, despite the fact that in this area fast codes or small systems (for accident-management-systems or stability analysis) are also be desirable.

The aim of the project is to systematically develop methods of model order reduction for the application reactor safety research. Existing methods for model order reduction are to be compiled and their performance will be evaluated. After identifying the most promising methods they will be used to develop reduced order models (ROMs) for light water reactors. These models will then be utilized for investigations on PWR-neutron flux fluctuation with increased amplitude (see DURATEA).