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Pool Film Boiling Experiments on a Wire in Low Gravity
Author(s) -
DI MARCO P.,
GRASSI W.,
TRENTAVIZI F.
Publication year - 2002
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2002.tb05923.x
Subject(s) - electric field , gravitational field , gravity of earth , leidenfrost effect , boiling , mechanics , physics , gravitation , electric flux , heat flux , nucleate boiling , field (mathematics) , heat transfer , chemistry , thermodynamics , classical mechanics , optical field , mathematics , quantum mechanics , pure mathematics
A bstract : This paper reports preliminary results for pool film boiling on a wire immersed in almost saturated FC72 recently obtained during an experimental campaign performed in low gravity on the European Space Agency Zero‐G airplane, (reduced gravity level 10 −2 ). This is part of a long‐term research program on the effect of gravitational and electric forces on boiling. The reported data set refers to experiments performed under the following conditions: (1) Earth gravity without electric field, (2) Earth gravity with electric field, (3) low gravity without electric field, and (4) low gravity with electric field. Although a decrease of gravity causes a heat transfer degradation, the electric field markedly improves heat exchange. This improvement is so effective that, beyond a certain field value, the heat flux is no longer sensitive to gravity. Two main film boiling regimes have been identified, both in normal and in low gravity: one is affected by the electric field and the other is practically insensitive to the field influence.