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International Journal of Fluid Mechanics Research

Erscheint 6 Ausgaben pro Jahr

ISSN Druckformat: 2152-5102

ISSN Online: 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

The Effect of a Spacer Grid Mixing Vane on the Critical Heat Flux for a Rod Bundle

Volumen 25, Ausgabe 1-3, 1998, pp. 230-242
DOI: 10.1615/InterJFluidMechRes.v25.i1-3.200
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ABSTRAKT

The present study experimentally investigates the critical heat flux for a 5 × 5 rod bundle as a simple model for an actual PWR fuel assembly. Tests were performed for the 25 rod bundle with and without mixing vanes of spacer grids to evaluate the effect of mixing vanes on the critical heat flux. The enthalpy distribution among the subchannels and turbulent mixing coefficient were obtained by single-phase flow tests, and the effect of the mixing vanes on the critical heat flux was examined by two-phase flow tests for various inlet subcooling, mass flux and pressure conditions. The results show that the effect of the mixing vanes on the critical heat flux is more dominant in the subcooled or bubbly flow regime than in the slug or annular flow regime. The mixing vane gives the positive effect by generating the swirling flow and turbulent inter-channel mixing, and by agitating bubbles from the wall for all the flow conditions, on the other hand, it also incurs the negative effect by thinning and destroying the liquid film as a result of increasing the entrainment at the annual flow condition and by the blockage-like behavior at the high mass flux condition.

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