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Analysis of institutional authors

Borshchak Kachalov, AndriyAuthorSalgado Sánchez PCorresponding AuthorPorter JCorresponding AuthorEzquerro JmCorresponding Author

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January 22, 2021
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The combined effect of natural and thermocapillary convection on the melting of phase change materials in rectangular containers

Publicated to: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER. 168 120864- - 2021-04-01 168(), DOI: 10.1016/j.ijheatmasstransfer.2020.120864

Authors:

Kachalov, A Borshchak; Kachalov, A Borshchak; Sanchez, P Salgado; Sanchez, P Salgado; Porter, J; Porter, J; Ezquerro, J M; Ezquerro, J M
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Affiliations

Centro de Investigacion En Simulacion Computacional, Universidad Politecnica de Madrid - Author
Escuela Tecnica Superior de Ingenieros Aeronauticos, Madrid - Author
‎ Univ Politecn Madrid, Ctr Computat Simulat, Campus Montegancedo, Madrid 28660, Spain - Author
‎ Univ Politecn Madrid, Escuela Tecn Super Ingn Aeronaut & Espacio, Dept Aeronaves & Vehiculos Espaciales, E USOC, Plaza Cardenal Cisneros 3, Madrid 28040, Spain - Author
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Abstract

© 2020 Elsevier Ltd The results of numerical simulations investigating the influence of natural and thermocapillary convection on the solid/liquid phase transition of n-octadecane in rectangular containers are presented. The melting process is modelled using an enthalpy-porosity formulation of the Navier–Stokes equations. A systematic analysis is performed by varying key dimensionless parameters including the container aspect ratio (Γ), the Rayleigh (Ra) and Marangoni (Ma) numbers, which quantify the strength of natural and thermocapillary convection, and the dynamic Bond number (Bodyn), which measures their relative importance. In large containers with Γ≫1 and Bodyn≪1, thermocapillary convection is shown to significantly accelerate the melting process, enhancing the heat transfer rate of the system by as much as a factor of 20 at large applied Ma. For Γ≲8, this enhancement factor takes reduced values of 1–3 and exhibits relatively weak dependence on Ma. In short containers with Γ≲3 and Bodyn∼O(1), the thermocapillary effect is detrimental on average and increases the total melting time. The presence of normal vertical gravity is seen to stabilise the dynamics of the flow, delaying the appearance of oscillatory convection beyond the range of parameters considered here. By reducing Bodyn, we examine the transition to microgravity and determine the critical value Bodyncr for oscillatory flow at large Ma for the representative aspect ratios 1.5 and 12.
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Keywords

Marangoni convectionNatural convectionPhase change materialsThermocapillary effect

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 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, 2021, it was in position 15/138, thus managing to position itself as a Q1 (Primer Cuartil), in the category Mechanics.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 2.51. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 13, 2025)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 3.07 (source consulted: FECYT Mar 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-25, the following number of citations:

  • WoS: 34
  • Scopus: 42
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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: 17 (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:

  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/86892/

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: 123
  • Downloads: 65
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Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Kachalov, AB) and Last Author (Ezquerro, JM).

the authors responsible for correspondence tasks have been SALGADO SANCHEZ, PABLO, PORTER, JEFFREY BRENT and EZQUERRO NAVARRO, JOSE MIGUEL.

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