Выходит 18 номеров в год
ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561
Indexed in
NUMERICAL OPTIMIZATION OF DOUBLE-DIFFUSIVE MIXED CONVECTION IN A RECTANGULAR ENCLOSURE WITH A REACTANT FLUID
Краткое описание
In the present paper, we systematically study the effects of the heater length (Wp), as well as of the Richardson (Ri), Lewis (Le), and Reynolds (Re) numbers on the irreversibility production of double-diffusive mixed convection in an open enclosure with a reactant fluid. The fluid with temperature-dependent viscosity and thermal conductivity enters and leaves the enclosure through the inlet and outlet located at the left and right, respectively. Moreover, a heat source located at the bottom wall transfers energy to the fluid, and thermochemical conversion takes place inside the enclosure. At the inlet the fluid is considered to have a high concentration, while a low concentration is imposed over the heater. The studied cases cover Ri = 0.75–5, Le = 0.1–5, Wp = 0.2–0.4, and Re = 100–1000. The results include the temperature and concentration contours, average concentration profiles, average Nusselt number, global total entropy generation, and the average Bejan number. Simulations indicate that the thermochemical conversion is practically independent of the length of the heater, and its highest value or lowest concentration of the flow occurs at Le = 5, Ri = 1.25, and Re = 100. Furthermore, the entropy production is minimized at Wp = 0.3, Re = 100, Ri = 0.75, and Le = 2.5. Therefore, the optimal condition of the thermochemical conversion device is attained at Le = 2.5, Wp = 0.3, Re = 100, and 0.75 ≤ Ri ≤ 1.25.
-
Ovando-Chacon Guillermo Efren, Ovando-Chacon Sandy Luz, Rodriguez-Leon Abelardo, Diaz-Gonzalez Mario, Hernandez-Zarate Jorge Arturo, Servin-Martinez Alberto, Numerical Study of Nanofluid Irreversibilities in a Heat Exchanger Used with an Aqueous Medium, Entropy, 22, 1, 2020. Crossref
-
Ovando-Chacon Guillermo Efren, Rodríguez-León Abelardo, Ovando-Chacon Sandy Luz, Hernández-Ordoñez Martín, Díaz-González Mario, Pozos-Texon Felipe de Jesús, Computational Study of Thermal Comfort and Reduction of CO2 Levels inside a Classroom, International Journal of Environmental Research and Public Health, 19, 5, 2022. Crossref