Some Remarks on Channeling in Particle Beds

EXPERIMENTAL RESULTS OF IN-PILE AND OUT-OF-PILE TESTS WITH LIQUID SATURATED PARTICLE BEDS AND THEORETICAL MODELS ON CHANNEL FORMATION ARE REVIEWED. AN EXTENSION OF LIPINSKIS MODEL IS PROPOSED ON THE BASIS OF A CONCEPT OF STICKING FORCES BETWEEN THE SOLID PARTICLES. THE INFLUENCE OF VAPOUR CHANNELS ON THE INCEPTION OF DRYOUT IS MODELLED BY AN INCREASED PERMEABILITY IN THE CHANNELED LAYER OF THE PARTICLE BED. AS A RESULT IT FOLLOWS THAT IN CONTRAST TO BED DISRUP- TIONS CHANNELS WILL NOT DRASTICALLY INCREASE THE COOLABILITY OF A DEBRIS BED.

SCHWALM Dankwart; 

1995-03-15

European Commission

JRC4048

EUR 10005 EN,   

https://publications.jrc.ec.europa.eu/repository/handle/JRC4048,