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Abstract

A study of pressure pulses due to collapsing bubbles in different experimental situations has been performed at JRC Ispra to get more insight into the fragmentation process during fuel-coolant interactions. By means of a theoretical model developed at the IKE the vapour bubble behaviour and the pressure pulses during such interactions of melt drops in a coolant can be calculated. The theoretical examination allows conclusions on the fragmentation process determining the vapour production and the connected bubble behaviour. Four different modes of bubble oscillations in liquid were studied experimentally and the characteristic pressure traces were measured near the bubble: Implosions of evacuated glass spheres: single pressure pulse, no oscillations in forepump oil, high pressure peaks, inharmonic damped oscillations in volatile liquids (alcohol and water). Strong fuel drop interactions: high pressure peaks, inharmonic, forced oscillations in water. Mild fuel drop interactions: small pressure peaks, harmonic, forced oscillations in water.

Additional information

Authors: MUELLER K, UNIVERSITY OF STUTTGART, D;JRC-ISPRA, I;BUERGER M, UNIVERSITY OF STUTTGART, D;JRC-ISPRA, I;SCHINS H UNIVERSITY OF STUTTGART, D, UNIVERSITY OF STUTTGART, D;JRC-ISPRA, I;JRC-ISPRA, I, UNIVERSITY OF STUTTGART, D;JRC-ISPRA, I
Bibliographic Reference: JAHRESTAGUNG KERNTECHNIK '88, TRAVEMUENDE/D, MAY 17-19, 1988, AVAILABILITY: CEC-LUXEMBOURG, DG-XIII/A2, BP 1907, MENTIONING PAPER ORA 33936 E
Availability: Can be ordered online
Record Number: 1989126095000 / Last updated on: 1993-01-19
Category: PUBLICATION
Available languages: en