Abstract
In this paper, a common and widely used micro-heat sink (H/S) was redesigned and simulated using computational fluid dynamics methods. This H/S has a large number of microchannels in which the walls are wavy (wavy microchannel heat sink: WMCHS). To improve cooling, two ( and ) water-based nanofluids (NFs) were used as cooling fluids, and their performance was compared. For this purpose, studies were carried out at three Reynolds numbers (Re) of 500, 1000, and 1500 when the volume percent (φ) of the nanoparticles (NPs) was increased to 2%. The mixture two-phase (T-P) model was utilized to simulate the NFs. Results showed that using the designed WMCHS compared to the common H/S reduces the average and maximum temperatures (T-Max) up to 2 °C. Moreover, using the NF is more suitable in terms of WMCHS temperature uniformity as well as its thermal resistance compared to the NF. Increasing the φ is desirable in terms of temperature, but it enhances the pumping power (PP). Besides, the Figure of Merit (FOM) was investigated, and it was found that the value is greater at a higher volume percentage.
Highlights
Nowadays, many available devices are intelligent and contain a variety of electronic components
The results revealed that growing the Reynolds number (Re) and volume percentage of the NPs decreases the maximum heat sink (H/S) temperature
The results demonstrated that the temperature gradient formed in the H/S is affected by this diameter
Summary
Mohammad Sajadi 4,5 , Mohsen Sharifpur 6,7, * and Josua P. Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University, Jeddah 80204, Saudi Arabia. Center Excellence of Renewable Energy and Power, King Abdulaziz University, Jeddah 80204, Saudi Arabia.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
