Optimization of thermal performance of multi-nozzle trapezoidal microchannel heat sinks by using nanofluids of Al2O3 and TiO2

Flow and Heat Transfer in a Trapezoidal Cross-Sectional Microchannel Heat Sink Using Nanofluid

“…Literature review has showed that, in general, silicon is used as substrate material in MCHS. However, as stated in Tran et al [25], copper as a substrate material enhances the cooling performance. Therefore, considering the situation mentioned above, MCHS material was chosen as copper in the present study.…”

“…It was expressed that total thermal conductivity decreases when the side angle of MC decreases. The effects of material selection and hydraulic diameter on heat transfer under laminar flow within a trapezoidal MCHS were explored by Tran et al [25] for Al2O3-water nanofluid and TiO2water nanofluid having volume concentrations less than 1%. Authors reported that MCHS using copper as a substrate material has better performance compared to aluminium, silicon, iron, stainless steel.…”

A review of passive methods in microchannel heat sink application through advanced geometric structure and nanofluids: Current advancements and challenges

“…Besides that, vortex flow induced by the rib geometry because of adverse pressure gradient can change the flow structure of fluid at the nearest cavity area, where the increase in the degree of flow mixing can contribute to the enhancement of heat transfer performance Some criteria need to be considered during the preparation of nanofluid, which include base fluid selection, size, shape, concentration, purity, dispersibility, thermal conductivity, preparation method (dispersion technique and sonication time [121,122]), and compatibility of nanoparticles that ensure the homogeneity of nanofluid [123]. Table 3 shows some types of nanoparticles that have been used in the MCHS application in the previous studies [124][125][126][127][128][129][130][131][132][133][134][135][136] It can be observed that most of the researchers were interested in Al 2 O 3 nanoparticle as an additive in a base fluid for the MCHS application. Besides that, pure water such as deionised (DI) and distilled water was widely used as a base fluid in the analysis.…”

Dalgalı Mikrokanalda Nanoakışkanların Laminer Akışta Isı Transfer Performansının Sayısal Olarak İncelenmesi

“…Nanoparticle concentration has been selected as 0-0.25% and the maximum increase in heat transfer is 4.6%. Tran et al [7], have studied laminar flow in the trapezoidal micro-channel. The base fluid is water, and nanoparticle materials have been selected Al2O3 and TiO2.…”