Experimental investigation of the twist angle effects on thermo-hydraulic performance of a square and hexagonal pin fin array in forced convection

Author(s):  
Emad M.S. El-Said ◽  
Gamal B. Abdelaziz ◽  
Swellam W. Sharshir ◽  
Ammar H. Elsheikh ◽  
Ashraf Mimi Elsaid
2018 ◽  
Vol 20 ◽  
pp. 311-317 ◽  
Author(s):  
Shitole Pankaj ◽  
Bhosle Santosh ◽  
Kulkarni Kishor ◽  
Joshi Sarang

2001 ◽  
Vol 30 (7) ◽  
pp. 533-541 ◽  
Author(s):  
Suyan Dong ◽  
Songling Liu ◽  
Hongzhen Su

2017 ◽  
Vol 48 (4) ◽  
pp. 309-318
Author(s):  
J. Ganesh Murali ◽  
Subrahmanya S. Katte

Author(s):  
Ali Kosar ◽  
Chih-Jung Kuo ◽  
Yoav Peles

An experimental study on thermal-hydraulic performance of de-ionized water over a bank of shrouded NACA 66-021 hydrofoil micro pin fins with wetted perimeter of 1030-μm and chord thickness of 100 μm has been performed. Average heat transfer coefficients have been obtained over effective heat fluxes ranging from 4.0 to 308 W/cm2 and mass velocities from 134 to 6600 kg/m2s. The experimental data is reduced to the Nusselt numbers, Reynolds numbers, total thermal resistances, and friction factors in order to determine the thermal-hydraulic performance of the heat sink. It has been found that prodigious hydrodynamic improvement can be obtained with the hydrofoil-based micro pin fin heat sink compared to the circular pin fin device. Fluid flow over pin fin heat sinks comprised from hydrofoils yielded radically lower thermal resistances than circular pin fins for a similar pressure drop.


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