{rfName}
RA

Indexed in

License and use

Citations

13

Altmetrics

Grant support

The present work has been partially funded by the European SESAME Horizon 2020 project [654935] .

Analysis of institutional authors

Ortiz, Agustin VillaCorresponding Author

Share

April 10, 2023
Publications
>
Article
No

RANS thermal modelling of a natural convection boundary layer at low Prandtl number

Publicated to:Computers & Fluids. 254 105809- - 2023-03-30 254(), DOI: 10.1016/j.compfluid.2023.105809

Authors: Ortiz, Agustin Villa; Koloszar, Lilla

Affiliations

Univ Rey Juan Carlos, GISAT, Camino Molino 5, Madrid 28942, Spain - Author
von Karman Inst Fluid Dynam, Waterloosesteenweg 72, B-1640 Rhode St Genese, Belgium - Author

Abstract

The present work evaluates the performance of different RANS turbulence models in a natural convection boundary layer at three different Prandtl numbers: 0.71, 0.2 and 0.025. An assessment on the prediction of the boundary layer is presented in function of the wall fluxes, mean and turbulent flow fields. It is observed that the chosen turbulence model to close the momentum equation is relevant in order to capture the flow field at low Prandtl numbers. This is due to the strong interaction between the momentum and thermal fields in natural convection. From the thermal point of view, the analogy between the turbulent momentum and turbulent thermal diffusivities presents serious issues to correctly predict the flow field independently of the Prandtl number. Advanced models that employ algebraic or transport equations of the turbulent heat fluxes introduces the needed physics to correctly predict the natural convection boundary layer.

Keywords

Atmospheric thermodynamicsBoundary layer flowBoundary layersDifferent prandtl numbersFlowFlow fieldsForecastingHeat-transferLow prandtl fluidLow prandtl numberMean flow fieldsMomentumNatural convectionNatural convection boundary layerNavier stokes equationsNumerical-simulationPerformancePrandtl numberRans turbulence modelsReynoldsReynolds - averaged navier-stokesReynolds averaged navier-stokesReynolds averaged navier–stokesThermal modelTransfer turbulence modelTurbulence modelingTurbulence modellingTurbulence modelsTurbulent flow

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Computers & Fluids due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2023, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering (Miscellaneous).

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 2.51, which 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: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-16, the following number of citations:

  • WoS: 5
  • Scopus: 4
  • Google Scholar: 1

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 2025-07-16:

  • 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: 15 (PlumX).

Leadership analysis of institutional authors

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

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 (Villa Ortiz, Agustín) .

the author responsible for correspondence tasks has been Villa Ortiz, Agustín.