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Martinez MAuthorPallarés JAuthorVernet AAuthor
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Turbulent schmidt numbers for CFD simulations using the k-ϵ and k-ω models

Publicated to:Progress In Computational Fluid Dynamics. 16 (6): 356-363 - 2016-01-01 16(6), DOI: 10.1504/PCFD.2016.080056

Authors: Martinez, Manuel; Pallares, Jordi; Vernet, Anton

Affiliations

Univ Rovira & Virgili, Dept Mech, Av Paisos Catalans 26, E-43007 Tarragona, Spain - Author
Universitat Rovira i Virgili - Author

Abstract

© 2016 Inderscience Enterprises Ltd. Turbulent diffusion dominates mixing at high molecular Schmidt numbers. When solving the Reynolds averaged Navier-Stokes equations, one of the key parameters for the correct simulation of mixing is the turbulent Schmidt number (Sct). In the case of the k-ϵ turbulence model, many CFD packages suggest a value of 0.7 for Sct. However, it has been demonstrated that this value is not adequate for all cases. This paper reports simulations for three different cases of turbulent mixing and compares the results with experimental data. It has been found that, for jets in crossflow, Sct is a function of the Reynolds number of the jet, the ratio between the diameters of the jet and main flow and the turbulent intensity of the jet and the main flow. Numerical simulations using the k-ω model are also performed, showing that the required value of Sct is dependent on the turbulence model used.

Keywords
Cfd - computational fluid dynamicsComputational fluid dynamicsCrossflowJets in crossflowK-? modelK-ω modelK-ϵ modelNumerical simulationTurbulent diffusionTurbulent mixingTurbulent schmidt number

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Progress In Computational Fluid Dynamics, and although the journal is classified in the quartile Q4 (Agencia WoS (JCR)), its regional focus and specialization in Thermodynamics, give it significant recognition in a specific niche of scientific knowledge at an international level.

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 2025-05-08:

  • WoS: 6
  • Scopus: 9
  • OpenCitations: 4
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 2025-05-08:

  • 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: 7 (PlumX).
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 (Martínez del Álamo, Manuel) and Last Author (Vernet Peña, Antonio).