Thermo-Hydraulic Performance of Multiple Channels and Pin Fins Forming Convergent/Divergent Shape

Heat enhancement has been addressed by studying flow in channels with different shapes. The present paper investigates a particular channel shape with divergent and convergent forms. Two configurations are addressed: wall channels and pin-fin walls forming divergent/convergent shapes. The flow is as...

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Main Author: Mohamad Ziad Saghir
Format: Article
Language:English
Published: MDPI AG 2022-10-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/15/21/7993
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author Mohamad Ziad Saghir
author_facet Mohamad Ziad Saghir
author_sort Mohamad Ziad Saghir
collection DOAJ
description Heat enhancement has been addressed by studying flow in channels with different shapes. The present paper investigates a particular channel shape with divergent and convergent forms. Two configurations are addressed: wall channels and pin-fin walls forming divergent/convergent shapes. The flow is assumed to be in a laminar and steady-state condition. The numerical model investigated the heat enhancement for different flow rates represented by Reynolds numbers. The average Nusselt number and the performance evaluation criterion revealed that wall channels outperformed the pin-fin shape. The performance evaluation criterion is higher than 1 for the wall channels. The main reason for this is that the flow passes through and above the wall creating mixing. This flow configuration happened since the wall height is shorter than the test cavity height. It is important to emphasize that pin-fins forming convergent channels did not improve heat enhancement when compared to convergent channels. No significant variation in the pressure drop was detected.
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spelling doaj.art-226a4c379d9c41679a57c79b8ca457e92023-11-24T04:30:09ZengMDPI AGEnergies1996-10732022-10-011521799310.3390/en15217993Thermo-Hydraulic Performance of Multiple Channels and Pin Fins Forming Convergent/Divergent ShapeMohamad Ziad Saghir0Department of Mechanical and Industrial Engineering, Toronto Metropolitan University, Toronto, ON M5B 2K3, CanadaHeat enhancement has been addressed by studying flow in channels with different shapes. The present paper investigates a particular channel shape with divergent and convergent forms. Two configurations are addressed: wall channels and pin-fin walls forming divergent/convergent shapes. The flow is assumed to be in a laminar and steady-state condition. The numerical model investigated the heat enhancement for different flow rates represented by Reynolds numbers. The average Nusselt number and the performance evaluation criterion revealed that wall channels outperformed the pin-fin shape. The performance evaluation criterion is higher than 1 for the wall channels. The main reason for this is that the flow passes through and above the wall creating mixing. This flow configuration happened since the wall height is shorter than the test cavity height. It is important to emphasize that pin-fins forming convergent channels did not improve heat enhancement when compared to convergent channels. No significant variation in the pressure drop was detected.https://www.mdpi.com/1996-1073/15/21/7993convergent/divergent channelpin finsheat enhancementlaminar flow
spellingShingle Mohamad Ziad Saghir
Thermo-Hydraulic Performance of Multiple Channels and Pin Fins Forming Convergent/Divergent Shape
Energies
convergent/divergent channel
pin fins
heat enhancement
laminar flow
title Thermo-Hydraulic Performance of Multiple Channels and Pin Fins Forming Convergent/Divergent Shape
title_full Thermo-Hydraulic Performance of Multiple Channels and Pin Fins Forming Convergent/Divergent Shape
title_fullStr Thermo-Hydraulic Performance of Multiple Channels and Pin Fins Forming Convergent/Divergent Shape
title_full_unstemmed Thermo-Hydraulic Performance of Multiple Channels and Pin Fins Forming Convergent/Divergent Shape
title_short Thermo-Hydraulic Performance of Multiple Channels and Pin Fins Forming Convergent/Divergent Shape
title_sort thermo hydraulic performance of multiple channels and pin fins forming convergent divergent shape
topic convergent/divergent channel
pin fins
heat enhancement
laminar flow
url https://www.mdpi.com/1996-1073/15/21/7993
work_keys_str_mv AT mohamadziadsaghir thermohydraulicperformanceofmultiplechannelsandpinfinsformingconvergentdivergentshape