Inscrição na biblioteca: Guest
International Journal of Fluid Mechanics Research

Publicou 6 edições por ano

ISSN Imprimir: 2152-5102

ISSN On-line: 2152-5110

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.1 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.0002 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.33 SJR: 0.256 SNIP: 0.49 CiteScore™:: 2.4 H-Index: 23

Indexed in

Fluid Dynamics and Heat Transfer in Annular Two-Phase Flow

Volume 25, Edição 4-6, 1998, pp. 447-467
DOI: 10.1615/InterJFluidMechRes.v25.i4-6.10
Get accessGet access

RESUMO

The processes of evaporative heat transfer in annular flow are introduced and the associated hydrodynamic phenomena described. Predictions of evaporating, vertical annular flow are presented and compared with equivalent predictions for adiabatic equilibrium and condensing flows. The importance of departures from hydrodynamic equilibrium is demonstrated and discussed. A brief discussion is then given of annular flow in horizontal channels where the dynamic difference to vertical flow is that of the mechanism for maintaining the upper part of the tube wetted by the liquid phase. It is shown that the more likely mechanism for maintaining the liquid around the tube periphery is that of wave-induced transport. The mechanisms of heat transfer in annular flow are then discussed and the conventional picture of combined nucleate boiling and forced convection introduced. An attempt at rational prediction of the heat transfer coefficient behavior is described and shown to have inadequacies which are likely to arise from phenomena not accounted for in the conventional view. An experimental investigation is described in which evaporation and condensation are compared under equilibrium conditions. This shows that, in what is conventionally regarded as forced convection, evaporative heat transfer coefficients are considerably higher than those for condensation. This suggests that bubble evaporation is occurring in addition to convective heat transfer across the liquid film, probably associated with the occurrence of the large disturbance waves on the surface which have been shown to cause bubble entrainment, thus producing centers for bubble growth in the superheated liquid film. It is concluded that the conventional view of forced convective annular flow evaporation needs modification.

Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa Políticas de preços e assinaturas Begell House Contato Language English 中文 Русский Português German French Spain