论文信息 - Investigation of the local component of the neutron noise in a BWR and its application to the study of two-phase flow

Investigation of the local component of the neutron noise in a BWR and its application to the study of two-phase flow

Abstract In the paper the local component of the neutron noise of the Muhleberg BWR is in investigated. Noise measurements have been performed below 10 Hz and in the frequency region between 4 Hz and 50 Hz. The measured transit times have been applied to the study of the two-phase flow in the core, i.e. validity of some prescriptions used in current calculational models is investigated. Semi-empirical values of void fraction are evaluated and compared to corresponding results obtained by γ-technique. At high frequencies a new phenomenon, interpreted as a second transit time, has been observed in the upper part of the core.

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