The effect of wall speed ratios on magnetohydrodynamic (MHD) mixed convective flow in a square cavity filled with CuO-water nanofluid, incorporating a diagonally moving heated/cooled wall, is examined. The governing equations, which account for magnetic field effects, buoyancy forces, and nanoparticle concentration, are solved numerically using the finite volume method with the SIMPLE algorithm. The study investigates the effects of wall speed ratios ($\gamma$ = 0, 1, 2), Richardson numbers (Ri = 0.1, 1, 10), Hartmann numbers (Ha = 0, 10, 25, 50), and nanoparticle volume fractions ($\phi$ = 0.0, 0.05) on flow behavior and convective heat transfer within the cavity. The results demonstrate th... More >

This editorial outlines the evolving role of thermo-fluid sciences in advancing sustainable energy systems amid the global energy transition. It highlights key research frontiers, including decarbonization of thermal power and propulsion, next-generation renewable thermal technologies, advanced thermal management and energy storage, innovative working fluids, and the integration of AI/ML with high-fidelity simulations. The journal calls for interdisciplinary, multi-scale studies that link fundamental thermo-fluid advances to system-level sustainability impacts, such as exergy efficiency, life-cycle emissions, and grid resilience. IJTFSSE aims to serve as a leading platform for rigorous resea... More >

This study presents an analytical mathematical model for an integrated microbial fuel cell--oxic--anoxic bioreactor (MFC--OB--ANB) system designed for simultaneous slaughterhouse wastewater treatment and energy recovery. The model incorporates bioelectrochemical oxidation, nitrification, and denitrification processes using acetate as a representative substrate. Closed-form analytical solutions are derived for substrate degradation, nitrogen transformation, current density, and system voltage. The effects of biofilm thickness, membrane conductivity, and influent substrate concentration on treatment efficiency and power generation are systematically investigated. Results reveal that enhanced b... More >

Presents the introductory editorial for the inaugural issue of this title. More >

Presents the introductory editorial for the inaugural issue of this title. More >