Analogy between thermal and mass diffusion effects of a free convective flow in rectangular enclosure

• Autorzy: Ambethkar Vusala

Identyfikatory

DOI

10.17512/jamcm.2020.4.01

• Języki publikacji: EN

Abstrakty

EN

In this investigation, the analogy between thermal and mass diffusive effects of a free convective flow in a rectangular enclosure is emphasized. The upwind finite volume method is used to discretize the governing equations of the continuity, momentum, energy and mass transfer. The novelty in this exploration is to appropriately modify the well-known Semi-Implicit Method for Pressure-Linked Equations (SIMPLE) algorithm so that it suits to the present problem and thereby, the new flow variables such as the temperature and the concentration are computed. An empirical correlation for the average Sherwood number (Sh) that does not exist in literature is suggested in this work. The average Sherwood numbers for distinct fluids (gases and liquids) are calculated, and mass diffusion effects within the horizontal rectangle are analyzed. The average Nusselt numbers (Nu) are calculated for distinct fluids such as liquids (Pr ≫1), liquid metals (Pr≪1) and gases (Pr < 1) for different Rayleigh numbers in the range of 3x10⁵ ≤ R_aL ≤ 7x10 ⁹ from relevant empirical correlations existing in the literature. Accordingly, the thermal diffusion effects within the horizontal rectangle are analyzed.

Słowa kluczowe

EN

free convective flow; thermal diffusion effects; mass diffusion effects; rectangular enclosure; average Nusselt number; average Sherwood number; empirical correlations

PL

swobodny przepływ konwekcyjny; efekt dyfuzji termicznej; efekt dyfuzji masowej; korelacje empiryczne; średnia liczba Sherwooda; średnia liczba Nusselta

• Wydawca: Wydawnictwo Politechniki Częstochowskiej
• Czasopismo: Journal of Applied Mathematics and Computational Mechanics
• Rocznik: 2020
• Tom: Vol. 19, nr 4
• Strony: 5--20
• Opis fizyczny: Bibliogr. 18 poz., rys.

Twórcy

autor

Ambethkar Vusala

• Department of Mathematics Faculty of Mathematical Sciences University of Delhi Delhi-110007, India

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).