Galindo, J.; Serrano, J.; García-Cuevas González, LM.; Medina, N. (2022). Twin-entry turbine losses: An analysis using CFD data. International Journal of Engine Research. 23(7):1180-1200. https://doi.org/10.1177/14680874211007647
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/194391
Título:
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Twin-entry turbine losses: An analysis using CFD data
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Autor:
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Galindo, José
Serrano, J.R.
García-Cuevas González, Luis Miguel
Medina, Nicolás
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Entidad UPV:
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Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny
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Fecha difusión:
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Resumen:
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[EN] The current paper presents a computational fluid dynamics (CFD) flow behaviour and losses analysis of twin-entry radial
turbines in terms of its Mass Flow Ratio (MFR, the ratio between the flow passing through one of ...[+]
[EN] The current paper presents a computational fluid dynamics (CFD) flow behaviour and losses analysis of twin-entry radial
turbines in terms of its Mass Flow Ratio (MFR, the ratio between the flow passing through one of its intake ports and
its total mass flow), focusing on the mixing phenomena in the unequal admission conditions cases. The CFD simulations
are first validated with experimental data. Then, the losses mechanisms are analysed and quantified in the different parts
of the twin-entry turbine in terms of the MFR value. A sudden expansion is found at the junction of both branches in
the interspace between volutes and rotor for unequal and partial admission cases. Tracking the flow coming from each
of the turbine intake ports, it has been observed that both flow branches do not fully mix with each other within the
rotor. Another source of losses has been identified in the contact between both flow branches due to their momentum
exchange that depends on the difference between both flow branches velocities. These losses have not been considered
before, and they should be included in mean line loss-based models for twin-entry turbine since they are very significant
for unequal admission conditions.
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Palabras clave:
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Turbocharger
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Twin-entry turbine
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CFD analysis
,
Losses
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Entropy generation
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Derechos de uso:
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Reserva de todos los derechos
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Fuente:
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International Journal of Engine Research. (issn:
1468-0874
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DOI:
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10.1177/14680874211007647
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Editorial:
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SAGE Publications
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Versión del editor:
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https://doi.org/10.1177/14680874211007647
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Código del Proyecto:
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info:eu-repo/grantAgreement/ //FPU17%2F02803//AYUDA CONTRATO PREDOCTORAL FPU-MEDINA TOMAS. PROYECTO: TWIN-ENTRY PERFORMANCE STUDY UNDER UNDSTEADLY FLOW CONDITIONS/
info:eu-repo/grantAgreement/UPV//PAID-06-18/
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Descripción:
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This is the author's version of a work that was accepted for publication in International Journal of Engine Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting,
and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published as https://doi.org/10.1177/14680874211007647
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Agradecimientos:
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The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: Nicolas Medina is partially supported through contract FPU17/02803 of Programa de Formacion ...[+]
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: Nicolas Medina is partially supported through contract FPU17/02803 of Programa de Formacion de Profesorado Universitario of Spanish Ministerio de Ciencia, Innovacion y Universidades. This work has been partially supported by the 'Ayuda a Primeros Proyectos de Investigacion' (PAID-06-18), Vicerrectorado de Investigacion, Innovacion y Transferencia de la Universitat Politecnica de Valencia (UPV), Valencia, Spain.
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Tipo:
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Artículo
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