Entropy generation and thermohydraulics of mixed convection of hybrid-nanofluid in a vertical tube fitted with elliptical‑cut twisted tape inserts - a computational study

Khfagi, Amir Mohamad, Hunt, Graeme, Paul, Manosh C and Karimi, Nader (2023) Entropy generation and thermohydraulics of mixed convection of hybrid-nanofluid in a vertical tube fitted with elliptical‑cut twisted tape inserts - a computational study. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 45 (2), 3369-3391. (doi:10.1080/15567036.2023.2194855).

Record type: Article

Abstract

A numerical investigation is carried out to study the mixed convection of Al2O3-Cu/water hybrid-nanofluid in a vertical tube fitted with elliptical-cut twisted tape inserts (TECT). Thermodynamic irreversibilities are evaluated by calculating the Bejan number, as well as the system’s local and total entropy generation. Heat transfer, friction factor, thermal performance factor, and entropy generation analyses are conducted for a range of volumetric concentrations of nanoparticles and flow Reynolds numbers between 7000 and 15,000. The realizable k-

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