Thermo-hydraulic performance of nanofluids in a bionic fractal microchannel heat sink with traveling-wave fins

Flow and heat transfer characteristics of a fractal microchannel heat sink with three‐dimensional fractal tail

“…Under the operating condition of lower Reynolds number, the four fractals FMHS of the B‐type topological relationship can reach the comprehensive performance index of 1.23–1.29. Compared with our previous study, 35 the comprehensive performance index can be enhanced by up to 13.15%. While even at a higher Reynolds number, a comprehensive performance index of 1.06–1.09 can be achieved, which reflects the best heat transfer effect among various FMHS parameter combinations.…”

“…Ma et al 34 studied the breakup and size distribution of droplets in T‐shaped fractal microchannels and proposed the correlation coefficient for predicting volume distribution ratio, which provides ideas for designing multi‐branch microchannels. Qi et al 35 investigated the heat transfer performance of nanofluids in fractal microchannels with biomimetic fins. The results showed that the bionic fins can significantly reduce drag.…”

“…Microchannel heat sinks have been widely studied due to their strong heat transfer capacity. In previous extensive studies, we investigated the heat transfer performance of nanofluids in fractal microchannels with biomimetic fins and found that the peripheral part of microchannel heat sink always significantly reflects the weak heat transfer capacity 35 . In this paper, a method to strengthen the heat transfer in peripheral part of the fractal microchannel heat sink (FMHS) was proposed; that is, a higher‐order fractal was carried out at the tail end of the fractal microchannel, the general plane fractal method was abandoned, and the three‐dimensional fractal at the tail end was used instead, which is the innovation of this paper.…”

A design approach for thermal enhancement in heat sinks using different types of fins: A review

“…This helps to maximise the heat transfer rate and improve performance compared to regular working fluids. Numerous in-depth studies have been conducted due to the low thermal resistance and high thermal conductivity of nanofluids (Qi et al, 2021). Heat transfer enhancement methods are classified into two major types, namely active and passive.…”