Heat transfer and flow analysis of Al2O3-Water nanofluids in interrupted microchannel heat sink with ellipse and diamond ribs in the transverse microchambers. Issue 16 (2nd October 2018)

• Record Type: Journal Article
• Authors: Abdollahi, Ayoub; Sharma, Rajnish N.; Mohammed, Hussein A.; Vatani, Ashkan
• Is Part Of: Heat transfer engineering. Volume 39:Issue 16(2018)
• Page Start: 1461
• Page End: 1469
• Publication Date: 2018-10-02
• Subjects: Heat -- Transmission -- Periodicals; 621.4022
• DOI: 10.1080/01457632.2017.1379344
• Languages: English
• ISSNs: 0145-7632

Abstract

ABSTRACT: A three-dimensional numerical simulation of an interrupted microchannel heat sink is performed to investigate the pressure drop and heat transfer characteristics of a nanofluid flow. In the first part the effect of two different rib shapes on flow characteristics is studied to find the optimum design. In this part water is used as working fluid. For the second part of the present work, an Al2 O3 /water nanofluid with different volume fractions is modeled as the working fluid, and its performance is compared to water. Analysis shows that using ellipse ribs results in better performance of the microchannel rather than diamond ribs and no ribs. It was also shown that at least 2% of nanoparticles volume fraction is required to achieve an enhancement in heat transfer.