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Computational Thermal Sciences: An International Journal

Publicou 6 edições por ano

ISSN Imprimir: 1940-2503

ISSN On-line: 1940-2554

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.5 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00017 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.28 SJR: 0.279 SNIP: 0.544 CiteScore™:: 2.5 H-Index: 22

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STUDY OF EFFECT OF MOLECULAR PRANDTL NUMBER, TRANSPIRATION AND LONGITUDINAL PRESSURE GRADIENT ON FLOW AND HEAT TRANSFER CHARACTERISTICS IN BOUNDARY LAYERS

Volume 11, Edição 1-2, 2019, pp. 41-49
DOI: 10.1615/ComputThermalScien.2018024497
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RESUMO

A numerical modeling of a subsonic flow at a permeable plate in the presence of a flow pressure gradient is carried out using a differential turbulence model, supplemented with the transport equation for the turbulent heat flux. The dependences of the turbulent Prandtl number and other turbulent flow and heat transfer characteristics from the molecular Prandtl number, injection (suction) intensity of the gas through the permeable wall, and the acceleration parameter of the flow are presented. Air and mixtures of helium with xenon and argon are selected as the gas heat carriers and mercury, water, and transformer oil are selected as the liquid heat carriers, respectively. The effect of the variability of the turbulent Prandtl number on heat transfer characteristics, in particular, on the Nusselt number, is studied. It is shown that the difference of the Nusselt number obtained in the condition of the constant turbulent Prandtl number from the results obtained in the calculations with the equation for the turbulent heat flux increases under low and high molecular Prandtl number. The injection, suction, and pressure gradient also increase this difference and also lead to a substantial violation of the Reynolds analogy.

CITADO POR
  1. Burtsev S. A., Eletskiy I. A., Kochurov D. S., Gas stratification application in closed-cycle gas turbines, XLIII ACADEMIC SPACE CONFERENCE: dedicated to the memory of academician S.P. Korolev and other outstanding Russian scientists – Pioneers of space exploration, 2171, 2019. Crossref

  2. Lushchik V. G., Makarova M. S., Reshmin A. I., Enhancement of Heat Transfer during Turbulent Flow in Plane and Circular Nonseparating Diffusers, Journal of Engineering Physics and Thermophysics, 94, 2, 2021. Crossref

  3. Sakhnov A.Yu., Naumkin V.S., Velocity overshoot within the accelerated subsonic boundary layer over the heated wall, International Journal of Heat and Mass Transfer, 161, 2020. Crossref

  4. Lushchik V. G., Makarova M. S., Numerical Simulation of the Turbulent Boundary Layer with an Adverse Pressure Gradient, Fluid Dynamics, 57, 3, 2022. Crossref

  5. Lushchik V. G., Makarova M. S., Heat Transfer During the Tube Flow of an He–Xe Gas Mixture with a Substantial Pressure Gradient Due to the Strong Heating of the Tube, Journal of Engineering Physics and Thermophysics, 95, 6, 2022. Crossref

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