Computational analysis of heat transfer augmentation and thermodynamic irreversibility of hybrid nanofluids in a tube fitted with classical and elliptical‑cut twisted tape inserts
نویسندگان
چکیده
Abstract This work investigates heat transfer and entropy generation of a turbulent flow an Al 2 O 3 –Cu/water hybrid nanofluid in plain tube (PT) with classical (TPT) elliptical‑cut twisted tape (TECT) inserts. The pressure drop are investigated numerically at Re (7000–15,000), mass concentration (1–4%), the inlet temperature fluid (300 K). Further, total Bejan number examined = 7000 4%. obtained results indicate that can be intensified when inserting tape. In addition, increase thermal conductivity may cause slight coefficient. Moreover, performance factors nanoparticles increases. Nusselt numbers for TECT TPT 1.7 1.57 times higher than those PT, respectively. factor greatest roughly 195 1.9, respectively, showing 3.9% 7.73% improvement compared to CuO/water 7000. analysis is expressed as function frictional contributions. existence minimum each type tubes nanofluid. Total demonstrates dominates high flux. increasing decreases entropy, which ascribed increment. rate declines vortex
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ژورنال
عنوان ژورنال: Journal of Thermal Analysis and Calorimetry
سال: 2022
ISSN: ['1388-6150', '1572-8943', '1588-2926']
DOI: https://doi.org/10.1007/s10973-022-11418-0