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Magneto double-diffusive free convection inside a C-shaped nanofluid-filled enclosure including heat and solutal source block

Vineet Tirth, Amjad Ali Pasha, Tahar Tayebi, A.S. Dogonchi, Kashif Irshad, Ali J. Chamkha, Ali Algahtani, Tawfiq Al‐Mughanam, Ahmed M. Galal

2023Case Studies in Thermal Engineering41 citationsDOIOpen Access PDF

Abstract

In industry, double-diffusive convection has various and important technical applications. These applications include electronic apparatus cooling, drying processes, fuel cells, geothermal engineering, and thermal storage. We provide an entropy-thermal based analysis of magnetized Boussinesq-free double-diffusive convection engendered by internal heat and concentration source block in a nanofluid-filled C-shaped inclined confined space. Findings may be interpreted and assessed in terms of the leading variables such as Lewis number (Le = 2 to 8), Hartmann number (Ha= 0 to 20), buoyancy ratio (N = 1 to 3), and Rayleigh number (Ra = 105 and 106). Besides, to determine the effective geometry and good control of the phenomenon, the investigation also covered the system geometry parameters including the position of the concentration and heat source block (h/L = 0.2 to 0.8) and the inclination angle of the enclosure (δ = 0°–90°). We state that the mass and heat transfer rates increase with Ra, N, and δ while decreasing with Ha, Le, and h/L parameters. Furthermore, when Le, Ha, N, and δ increase, overall entropy increases, whereas it decreases as the h/L parameter increases.

Topics & Concepts

EnclosureNanofluidRayleigh numberMaterials scienceConvectionBuoyancyNatural convectionHartmann numberLewis numberThermodynamicsHeat transferMechanicsThermalMass transferPhysicsNusselt numberReynolds numberTurbulenceComputer scienceTelecommunicationsNanofluid Flow and Heat TransferHeat Transfer and OptimizationHeat and Mass Transfer in Porous Media