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Atomization and Sprays

Publicou 12 edições por ano

ISSN Imprimir: 1044-5110

ISSN On-line: 1936-2684

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: 1.2 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: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 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: 0.00095 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: 0.28 SJR: 0.341 SNIP: 0.536 CiteScore™:: 1.9 H-Index: 57

Indexed in

A GIBBS ENERGY RELAXATION (GERM) MODEL FOR CAVITATION SIMULATION

Volume 25, Edição 4, 2015, pp. 317-334
DOI: 10.1615/AtomizSpr.2014010372
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RESUMO

In this paper, a comprehensive highly compressible and turbulent two-fluid multispecies model is presented. It involves an equation for the transport of the liquid volume fraction in addition to two different sets of partial differential equations for the gas and the liquid phase. The multicomponent gas phase is governed by an ideal gas equation of state (EOS) while the stiffened gas EOS is specified to the single-component liquid phase. In this work, a Reynolds averaged Navier-Stokes (RANS) formulation is adopted. For the turbulence, a standard k − ε model is used for the gas phase while a turbulent viscosity-based model is used for the liquid phase in order to improve the laminar-turbulent transition computation through the nozzle. In addition, the model equations include different relaxation terms for mass, momentum, and energy exchanges at the liquid-gas interfaces. For the present cavitation modeling, an instantaneous relaxation procedure is used for the velocity, pressure, and temperature; while a slower procedure is adopted for the Gibbs free-energy relaxation model (GERM) at the interfaces. These models have been applied for the simulation of the cavitation inside a transparent single-hole nozzle. The obtained cavitation pocket has a similar shape as the experiments. Moreover, two different cavitation regimes have been identified. A gaseous cavitation regime appears in a region in which the static pressure is close to but above the liquid saturation pressure; a second cavitation regime may happen when the static pressure goes below the liquid saturation pressure. In the latter case, the liquid become superheated and leads to a vaporous cavitation regime. Also, the cooling of the fuel and the density variation due to the expansion of compressible liquid through the nozzle is among the more interesting findings of this paper.

CITADO POR
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  2. Habchi Chawki, Bohbot Julien, Schmid Andreas, Herrmann Kai, A comprehensive Two-Fluid Model for Cavitation and Primary Atomization Modelling of liquid jets - Application to a large marine Diesel injector, Journal of Physics: Conference Series, 656, 2015. Crossref

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  4. Rachakonda Sampath K., Wang Yue, Grover Ronald O., Moulai Maryam, Baldwin Eli, Zhang Gaoming, Parrish Scott, Diwakar Ramachandra, Kuo Tang-Wei, Schmidt David P., A computational approach to predict external spray characteristics for flashing and cavitating nozzles, International Journal of Multiphase Flow, 106, 2018. Crossref

  5. Yi Ping, Yang Songzhi, Habchi Chaouki, Lugo Rafael, A multicomponent real-fluid fully compressible four-equation model for two-phase flow with phase change, Physics of Fluids, 31, 2, 2019. Crossref

  6. Yang Songzhi, Yi Ping, Habchi Chaouki, Real-fluid injection modeling and LES simulation of the ECN Spray A injector using a fully compressible two-phase flow approach, International Journal of Multiphase Flow, 122, 2020. Crossref

  7. Habchi Chaouki, Real-fluid phase transition in cavitation modeling considering dissolved non-condensable gas, Physics of Fluids, 32, 3, 2020. Crossref

  8. Gaballa Hesham, Jafari Sajad, Habchi Chaouki, de Hemptinne Jean-Charles, Numerical investigation of droplet evaporation in high-pressure dual-fuel conditions using a tabulated real-fluid model, International Journal of Heat and Mass Transfer, 189, 2022. Crossref

  9. Szewczak Andrzej, Łagód Grzegorz, Zaburko Jacek, Pavlik Zbyšek, Influence of cavitation on changes in the viscosity of epoxy resins used in composite materials production, Thermophysics 2021: 26th International Meeting of Thermophysics 2021, 2488, 2022. Crossref

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  11. Szewczak Andrzej, Łagód Grzegorz, Adhesion of Modified Epoxy Resin to a Concrete Surface, Materials, 15, 24, 2022. Crossref

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