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Analysis of institutional authors

MuÑoz Paniagua, JorgeAuthorGarcia, JavierAuthor

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June 9, 2019
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Shape optimization of a long-tapered R134a ejector mixing chamber

Publicated to: ENERGY. 165 422-438 - 2018-12-15 165(), DOI: 10.1016/j.energy.2018.09.057

Authors:

Sierra-Pallares, J; del Valle, JG; Paniagua, JM; García, J; Méndez-Bueno, C; Castro, F
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Affiliations

Univ Politecn Madrid, Escuela Tecn Super Ingenieros Ind, Dept Ingn Energet, C Jose Gutierrez Abascal 2 - Author
Univ Tecn Ambato, Fac Ingn Civil & Mecan, Campus Huachi,Av Los Chasquis & Rio Payamino - Author
Univ Valladolid, Escuela Ingn Ind, Dept Ingn Energet & Fluidomecan, Paseo Cauce 59 - Author
Univ Valladolid, Inst Tecnol Avanzadas Prod, Paseo Cauce 59 - Author
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Abstract

The purpose of this investigation is to develop a computational methodology for the shape optimization of long-tapered mixing chambers of refrigerant ejectors based on the internal entropy generation. The workflow of the aforementioned methodology includes a one dimensional model to generate a baseline geometry. Then a design of experiments is performed around a parametrization of the baseline geometry and the resulting combinations are introduced in the CFD model. Based on the CFD entropy generation results, a surrogate model is trained and further used to determine the optimum geometry for the mixing chamber. The application of the surrogate model is not straightforward, but rather a loop style routine has been programmed in order to assure a global minimum rather than a local one. The proposed methodology has been applied to a R134a ejector geometry previously studied by the authors both experimentally and numerically. It has been found that given a design critical point, the entrainment ratio may be increased up to a value of 16% with the shape optimization whereas the discharge pressure remains constant. (C) 2018 Elsevier Ltd. All rights reserved.
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Keywords

CfdEjectorMixing chamberRefrigerationShape optimizationValidation

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal ENERGY due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2018, it was in position 3/60, thus managing to position itself as a Q1 (Primer Cuartil), in the category Thermodynamics. Notably, the journal is positioned above the 90th percentile.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-04-25:

  • Google Scholar: 18
  • WoS: 16
  • Scopus: 18
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-25:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 39 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/87278/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 131
  • Downloads: 63
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Ecuador.

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Awards linked to the item

The authors want to acknowledge Diego Vega Bermejo and Javier Munoz Navarro for their help in early stages of this work. The funding provided through grant number 2441-CUP-2015 is gratefully acknowledged.
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