Impact of Geometrical Parameters on Heat Transfer Characteristics of SiO2-Water Nanofluid Flow through Rectangular Corrugated Channels

• Main Authors: Elhadi Kh. Abugnah, Elhadi Kh. Abugnah, Wan Saiful-Islam Wan Salim, Wan Saiful-Islam Wan Salim, Abdulhafid M Elfaghi, Abdulhafid M Elfaghi
• Format: Article
• Language: English
• Published: semarak ilmu 2023
• Subjects: T Technology (General)
• Online Access: http://eprints.uthm.edu.my/10159/1/J16363_8a056ec5bc9a79c55c89fe12b3a328f9.pdf; http://eprints.uthm.edu.my/10159/; https://doi.org/10.37934/arfmts.104.2.86102

Design and performance of thermal devices are improved by optimizing their geometrical parameters. This study utilized numerical simulation to examine the heat transfer and flow properties of a rectangular corrugated channel at which nanofluid of silicon dioxide (SiO2) and water is flowing. It is determined how the height-to-width ratio (hc/W) and pitch-to-length ratio (pch/L) of a structure affect its thermal and hydraulic properties. The numerical simulations of flow include nanofluids with SiO2- to-water volume fractions of 8% is accomplished by employing the finite volume method (FVM) with SIMPLE algorithm for discretization of the governing equations and coupling of the pressure-velocity system while the k−ε turbulence model was employed to resolve turbulence. The results demonstrate that, in comparison to the (Pch/L) ratio, the (hc/W) ratio has a stronger influence on the enhancement of heat transfer. In reference to the values at minimum Re (Re = 10000), the ratio Pch/L = 0.05 offers the largest increase in Nuav over the Re range by 180.8%. At Reynolds number (Re) 30000, an increase in 99.5% of average Nusselt number (Nuav) is obtained when the (hc/W) ratio is increased from 0.0 to 0.05. The numerical results indicate that the hc/W of 0.05 with a Pch/L of 0.1075 are the optimum parameters and have shown significant improvement in thermal performance criteria (PEC).