Heat transfer enhancement in a corrugated chamber filled with hybrid nanofluid under an influence of internal heated plate

Abstract

Purpose The purpose of this research is to scrutinize numerically the effect of internally equipped nonuniformly heated plate within wavy cavity on heat transfer enhancement in the case of hybrid nanofluid flow. Design/methodology/approach The two-dimensional, steady, laminar, Newtonian and incompressible thermo-fluid flow phenomenon has been investigated numerically using Galerkin method. The considered parameters including number of waves (3–7), nondimensional length of heated plate (0.4–0.8), plate inclination angle (0º–90º), Rayleigh number (103–106) and concentration of nanoparticles (0.0–2.0) have been investigated in combination with involving hybrid nanofluid as a working fluid to augment thermal properties effectively. Two vertical wavy boundaries have low temperature whilst the other horizontal surfaces are adiabatic. Findings The Rayleigh number has a moderate impact on the values of Nusselt number, and skin friction parameter varied from 103 to 105 while it strongly affects them for Ra = 106, where Nu is roughly doubled (approximately 200%) in comparison with its value at Ra = 105 for all cases. Stream function is changed by the orientation of heated plate and Ra values, where its maximum value was 12.9 in horizontal position and 13.6 at vertical one. Results indicate a separation from the wavy walls at low Ra which tends to keep stagnation region at the deep parts of corrugated walls contrary the case at high Ra. The behavior of the isotherm contours tends to be distributed more evenly at lower values of Ra and angle of inclination lower than 45º. The resulting properties from mixing two materials for hybrid nanofluid into one base fluid show a good compromise between thermal capacity and heat conductivity, which is improved by 16% that leads to enhanced convective energy transport in the wavy chamber. Originality/value The originality of this work is the considered physical phenomenon where an influence of internal nonuniformly heated plate has been studied for the irregular geometry filled with a hybrid nanofluid. Such analysis allows defining the possible heat transfer enhancement for such an irregular cavity and inner heated plate.

Numerical investigation on thermal protection of wind turbine flanges in extremely cold weather

“…For the inside air natural convection, the associated mass, momentum and energy conservation are expressed as follows (Ma et al , 2023; Hamza et al , 2023).…”

Numerical investigation of three-dimensional natural convection heat transfer on corrugated plates of variable height

“…In alignment with the pursuit to optimize these systems and enable new engineering applications, increasing the natural convection heat transfer rate can be achieved through diverse strategies, such as using nanofluids, porous media, entropy analyses and/or magneto-convection. These strategies find representation in studies conducted by Wang et al (2022); Manna et al (2023); Sivanandam and Marimuthu (2023); Ma et al (2023); Aly and Alsedais (2023); Roşca et al (2023); Hamza et al (2023); Elmnefi and Al-Khazraji (2023); Roy and Monira (2023); Grosan et al (2023); Thirumalaisamy and Reddy (2023). Such technological applications, given the high associated costs, are still difficult to apply on a large scale to current engineering systems, but with the expectation that they will become commercially viable within this decade.…”

Effects of an internal cavity on heat transfer and mass transport in partially heated double corrugated domains

“…Augmentation in heat transfer characteristics of base fluid by inducing hybridized nanoparticles in a corrugated chamber and by placing late as a heat source was determined by Hamza et al. [25]. Sivaraj and Sheremet [26] executed numerical analysis to explore heat transfer and entropy generation in ferrofluid flow in a square enclosure due to the convective heat transfer generated by placement of non‐uniformly heated horizontal plate in a square enclosure and in the presence of an inclined uniform magnetic field.…”