@Article{hmt.v3.4.3002,
AUTHOR = {Soumei Baba, Nobuo Ohtani, Osamu Kawanami, Koichi Inoue, Haruhiko Ohta},
TITLE = {EXPERIMENTS ON DOMINANT FORCE REGIMES IN FLOW BOILING  USING MINI-TUBES},
JOURNAL = {Frontiers in Heat and Mass Transfer},
VOLUME = {3},
YEAR = {2012},
NUMBER = {4},
PAGES = {1--8},
URL = {http://www.techscience.com/fhmt/v3n4/55663},
ISSN = {2151-8629},
ABSTRACT = {Effects of tube orientation on flow boiling heat transfer coefficients were investigated for FC72 flowing in single mini-tubes with tube diameters of 
0.13 and 0.51 mm to define boundaries on a dominant force regime map. For the tube diameter of 0.51 mm, when mass velocity and vapor quality 
was varied, heat transfer coefficients were influenced by tube orientation at Froude number <i>Fr</i> < 4, while the effect of tube orientation on heat 
transfer coefficients disappears at <i>Fr</i> > 4. The results indicated that the boundary between the body force dominated and the inertia dominated 
regimes was given by <i>Fr</i> ≈ 4. On the other hand, for tube diameter of 0.13 mm, almost no effect of tube orientation on heat transfer coefficients was 
observed for all combinations of mass velocity and vapor quality tested, where heat transfer coefficients were independent of mass velocity and vapor 
quality at Weber number <i>We</i> < 5, and vice versa. The results indicated that the boundary between the surface tension dominated and the inertia 
dominated regimes was represented by <i>We</i> ≈ 5. From the above results, the boundary between the surface tension dominated and the body force 
dominated regimes was existed between <i>Bo</i> = 0.51 and 0.033.},
DOI = {10.5098/hmt.v3.4.3002}
}