Magnetohydrodynamic flow of a hybrid nanofluid over an exponentially stretching sheet with joule heating and slip conditions using spectral collocation method with legendre wavelets

Multiscale and Multidisciplinary Modeling Experiments and Design, Journal Year: 2025, Volume and Issue: 8(1)

Published: Jan. 1, 2025

Language: Английский

Optimizing Heat Transfer in Heat Pipes Using Hybrid Nanofluids With Multi‐Walled Carbon Nanotubes and Alumina

Engineering Reports, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 31, 2024

ABSTRACT This study investigates the thermal performance of heat pipes using hybrid nanofluids composed multi‐walled carbon nanotubes (MWCNT) and aluminum oxide (Al 2 O 3 ) nanoparticles. The aim was to assess effects nanoparticle concentration (0.1%–0.5%), filling ratio (60%–90%), input (50–80 W), inclination angle (0°–90°) on resistance transfer coefficient (HTC). Hybrid were prepared ultrasonic homogenization, their stability confirmed by zeta potential analysis, showing a reduction from −60 −48 mV over 30 days. Experimental results revealed that decreased with increasing angle, reaching minimum 0.80 K/W at 90° 90% ratio, 80 W input. Similarly, overall HTC increased these parameters, peaking 2250 W/m K under same conditions. At 0.5% concentration, improved up 40% compared conventional fluids. conductivity nanofluid also rose significantly, 0.7 30°C 1.5 90°C, outperforming distilled water. These findings highlight enhance pipe efficiency, particularly in high‐power applications, optimizing angle.

Language: Английский

Galerkin finite element analysis on radiative heat transfer in titanium dioxide-polyalphaolefin nanolubricant past a convergent/divergent channel with non-uniform heat source/sink effect

International Journal of Thermofluids, Journal Year: 2024, Volume and Issue: unknown, P. 100918 - 100918

Published: Oct. 1, 2024

Language: Английский