Subcooled and low quality flow film boiling of water at atmospheric pressure

A Comprehensive Examination of Heat Transfer Correlations Suitable for Reactor Safety Analysis

“…Despite these qualifying remarks, the Tmin correlation currently appears to be the most appropriate correlation for types I-IV film boiling terminations. This observation is based on the approximate agreement of this correlation with the data of Stewart (1981), Fung (1981), Shires et al (1964), Bennett et al (1965), Laperriere ~1983), Bradfield (1967) I and Lauer (1976) and on·the GROENEVELD (1982) From Groeneveld and Stewart (1982). 237 correct asyrnptotic trend of pressure and subcooling.…”

“…For subcooled conditions, however, a factor similar to that observed in pool film boiling is required, i.e., hsubc = hx=O (1 + 0.025 6Tsub) ' Fung (1981) reported that his model for inverted annular flow was in reasonable agreement with Stewart and Groeneveld's (1982) high-pressure data and Fung et al's (1981Fung et al's ( , 1979 atmospheric pressure data.…”

“…Recently, models have also been developed for the inverted annular flow regime (Fung, 1981); Kaufman, 1976;Elias and Chambre, 1981;Chan and Yadigaroglu, 1980). They are basically unequal velocity, unequal temperature (UVUT) models that can account for nonequilibrium in both the liquid and the vapor phases.…”

“…This gap in the data is gradually being filled with data obtained at the Chalk River Nuclear Laboratories (Fung et al, 1979;Stewart, 1981) and Lehigh University (Nijhawan et al, 1980) using the hot-patch technique developed at Chalk River (Groeneveld and Gardiner, 1978). Fung (1978) and Groeneveld and Gardiner (1977) have sumrnarized the available post-dryout sourceSi Fig.…”

Heat Transfer Modelling of Two-Phase Flow in Isolated Channel

“…At first, the refrigerants were used as a medium. Later, the first experiments with water were performed by Fung [1] at atmospheric pressure or by Stewart at a wider range of parameters [2]. The simplest test-section used for these types of experiments is a single-tube geometry [3].…”