2021
DOI: 10.1108/hff-04-2021-0253
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Heat transfer enhancement in microchannels using ribs and secondary flows

Abstract: Purpose The purpose of this paper is to study the flow and heat transfer characteristics of microchannel heatsinks with ribs, cavities and secondary channels. The influence of length and width of the ribs on heat transfer enhancement, secondary flows, flow distribution and temperature distribution are examined at different Reynolds numbers. The effectiveness of each heatsink is evaluated using the performance factor. Design/methodology/approach A three-dimensional solid-fluid conjugate heat transfer numerica… Show more

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Cited by 9 publications
(6 citation statements)
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“…Significant differences between their predictions and the previously published data were found. Karthikeyan et al. (2021) carried out numerical simulations on rectangular microchannels having ribs, cavities and secondary channels.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Significant differences between their predictions and the previously published data were found. Karthikeyan et al. (2021) carried out numerical simulations on rectangular microchannels having ribs, cavities and secondary channels.…”
Section: Introductionmentioning
confidence: 99%
“…Significant differences between their predictions and the previously published data were found. Karthikeyan et al (2021) carried out numerical simulations on rectangular microchannels having ribs, cavities and secondary channels. The thickness of the ribs had a more substantial effect on heat transfer compared to its length and enables more flow to pass through the secondary channels.…”
Section: Introductionmentioning
confidence: 99%
“…It has been practically established that fluid filtration within the reservoirs does not always occur according to Darcy's law. The manifestation of nonlinear effects due to the rheological properties of the filtered liquid in porous media has been examined in works (6)(7)(8) .…”
Section: Introductionmentioning
confidence: 99%
“…Various cooling methods are presented for dissipating the heat from electronic devices, same as heat pipes (Rama Narasimha et al , 2010), forced air cooling, thermo-electric cooling (Koh et al , 2015) and liquid-cooling systems (Prajapati, 2019; Alihosseini et al , 2020). To improve the performance of cooling systems, modern research has shifted to liquid technologies such as microchannel/pin-fin heat sinks (PFHSs) (Doshi et al , 2022; Paramanandam and Srinivasan, 2022). Tuckerman and Pease (1981) introduced microchannel heat sinks for the first time to solve the heat transfer issues in 1981.…”
Section: Introductionmentioning
confidence: 99%