Transient film boiling from a moving sphere

Hsiao, K.H.; Witte, L. C.; Cox, J. E.

doi:10.1016/0017-9310(75)90247-1

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…Boiling and Eggen (1971), Frederking et al (1964), Frederking and Daniels (1966), Grigoryev et al (1982), Hendricks and Baumeister (1970), Shair (1970a, 1970b), Lewis et al (1965), Manson (1966), Marschall and Farrar (1975), Merte and Clark (1964), Orozco and Witte (1984), Paschkis (1956Paschkis ( ,1958, Paschkis and Stolz (1956), Rezakhany and El-Wakil (1984), Nevins (1968,1969), Sankaran and Witte (1985), Schmidt and Witte (1972), Shih and El-Wakil (1981), Stevens and Witte (1971,1973), Stolz et al (159), Toda and Mori (1982), Ungar and Eichhorn (1982), Veres and Florschuetz (1971), Vliet and Leppert (1961), Walford (1969), Witte (1968aWitte ( , 1968b, and Witte et al (1968). Theoretical treatments are reported by 10 others: Ded and Lienhard (1972), Farahat and Nasr (1978), Fodemski and Hall (1982), Frederking and Clark (1962), Gunnerson and Cronenberg (1980), Henricks and Baumeister (1969), Hsiao et al (1975), Wilson (1979), Witte (1968b), and Witte and Orozco (1983).…”

Section: Spheresmentioning

confidence: 95%

Suggested standard method for obtaining boiling curves by quenching

Westwater¹,

Hwalek²,

Irving³

1986

Ind. Eng. Chem. Fund.

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Boiling curves, representing the heat flux vs. the temperature-difference driving force, can be computed from unsteady-state quenching tests. An inverse conduction calculation is used. For spheres and horizontal flat plates, the geometry and test conditions required to achieve boiling curves, which are equivalent to those obtained by steady-state tests and which are not sensitive to modest changes in geometry, are described. Such curves are useful for the design of commercial heat exchangers. A significant parameter for standardization is the Taylor hydrodynamic wavelength, or alternatively the bubble size at break-off.

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Section: Spheresmentioning

confidence: 95%

Suggested standard method for obtaining boiling curves by quenching

Westwater¹,

Hwalek²,

Irving³

1986

Ind. Eng. Chem. Fund.

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“…1A, the liquid nitrogen surrounding the droplet absorbs the heat from the liquid of relatively higher temperature and evaporates (14,15,19,20). As soon as droplets are immersed in liquid nitrogen, the evaporated nitrogen results in a buoyant force and a pressure differential pushing droplets to the liquid nitrogen surface (i.e., levitation phenomenon; Fig.…”

mentioning

confidence: 99%

Vitrification and levitation of a liquid droplet on liquid nitrogen

Song

Adler

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

127

117

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The vitrification of a liquid occurs when ice crystal formation is prevented in the cryogenic environment through ultrarapid cooling. In general, vitrification entails a large temperature difference between the liquid and its surrounding medium. In our droplet vitrification experiments, we observed that such vitrification events are accompanied by a Leidenfrost phenomenon, which impedes the heat transfer to cool the liquid, when the liquid droplet comes into direct contact with liquid nitrogen. This is distinct from the more generally observed Leidenfrost phenomenon that occurs when a liquid droplet is self-vaporized on a hot plate. In the case of rapid cooling, the phase transition from liquid to vitrified solid (i.e., vitrification) and the levitation of droplets on liquid nitrogen (i.e., Leidenfrost phenomenon) take place simultaneously. Here, we investigate these two simultaneous physical events by using a theoretical model containing three dimensionless parameters (i.e., Stefan, Biot, and Fourier numbers). We explain theoretically and observe experimentally a threshold droplet radius during the vitrification of a cryoprotectant droplet in the presence of the Leidenfrost effect.

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The Vapor Explosion—A Second Look

Witte

Cox

1978

JOM

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Transient film boiling from a moving sphere

Cited by 6 publications

References 5 publications

Suggested standard method for obtaining boiling curves by quenching

Suggested standard method for obtaining boiling curves by quenching

Vitrification and levitation of a liquid droplet on liquid nitrogen

The Vapor Explosion—A Second Look

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