A numerical investigation of heat transfer and pressure drop in a novel cylindrical heat sink with helical minichannels
This study numerically investigated heat transfer and fluid flow characteristics in a novel cylindrical heat sink with helical minichannels for the laminar flow of fluid with temperature-dependent properties. A finite volume method was employed to obtain the solution of governing equations. The effe...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Semnan University
2018-05-01
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| Series: | Journal of Heat and Mass Transfer Research |
| Subjects: | |
| Online Access: | https://jhmtr.semnan.ac.ir/article_2580_08677c9f4be05c35ecea551e243b5ce0.pdf |
| _version_ | 1827316308199342080 |
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| author | Alireza Falahat Reza Bahoosh Aminreza Noghrehabadi |
| author_facet | Alireza Falahat Reza Bahoosh Aminreza Noghrehabadi |
| author_sort | Alireza Falahat |
| collection | DOAJ |
| description | This study numerically investigated heat transfer and fluid flow characteristics in a novel cylindrical heat sink with helical minichannels for the laminar flow of fluid with temperature-dependent properties. A finite volume method was employed to obtain the solution of governing equations. The effects of helical angle, channel aspect ratio, and Reynolds number, which were regarded as main parameters, were determined. The overall performance of the heat sink was also analyzed on the basis of the thermal performance factor and the augmentation entropy generation number. Results showed that a decrease in the channel helix angle and an increase in the channel aspect ratio and Reynolds number enhance the average heat transfer coefficient and pressure drop in the heat sink. The thermal performance factor and entropy generation minimization method revealed that an aspect ratio of 1.2 enables the best heat sink performance at all helix angles. When the helix angle decreases, performance increases, especially at low aspect ratios. |
| first_indexed | 2024-04-24T23:12:23Z |
| format | Article |
| id | doaj.art-2f8b35d425a041e6a693d1b1e340410b |
| institution | Directory Open Access Journal |
| issn | 2345-508X 2383-3068 |
| language | English |
| last_indexed | 2024-04-24T23:12:23Z |
| publishDate | 2018-05-01 |
| publisher | Semnan University |
| record_format | Article |
| series | Journal of Heat and Mass Transfer Research |
| spelling | doaj.art-2f8b35d425a041e6a693d1b1e340410b2024-03-17T08:03:19ZengSemnan UniversityJournal of Heat and Mass Transfer Research2345-508X2383-30682018-05-0151112610.22075/jhmtr.2017.11247.11592580A numerical investigation of heat transfer and pressure drop in a novel cylindrical heat sink with helical minichannelsAlireza Falahat0Reza Bahoosh1Aminreza Noghrehabadi2Department of Mechanical Engineering,Shahid Chamran University of Ahvaz,Ahvaz, IranDepartment of Mechanical Engineering, Shahid Chamran University of Ahvaz, Ahvaz, IranDepartment of Mechanical Engineering, Shahid Chamran University of Ahvaz, Ahvaz, IranThis study numerically investigated heat transfer and fluid flow characteristics in a novel cylindrical heat sink with helical minichannels for the laminar flow of fluid with temperature-dependent properties. A finite volume method was employed to obtain the solution of governing equations. The effects of helical angle, channel aspect ratio, and Reynolds number, which were regarded as main parameters, were determined. The overall performance of the heat sink was also analyzed on the basis of the thermal performance factor and the augmentation entropy generation number. Results showed that a decrease in the channel helix angle and an increase in the channel aspect ratio and Reynolds number enhance the average heat transfer coefficient and pressure drop in the heat sink. The thermal performance factor and entropy generation minimization method revealed that an aspect ratio of 1.2 enables the best heat sink performance at all helix angles. When the helix angle decreases, performance increases, especially at low aspect ratios.https://jhmtr.semnan.ac.ir/article_2580_08677c9f4be05c35ecea551e243b5ce0.pdfcylindrical helical minichannels heat sinkthermal performance factorthermal resistanceentropy generationchannel aspect ratio |
| spellingShingle | Alireza Falahat Reza Bahoosh Aminreza Noghrehabadi A numerical investigation of heat transfer and pressure drop in a novel cylindrical heat sink with helical minichannels Journal of Heat and Mass Transfer Research cylindrical helical minichannels heat sink thermal performance factor thermal resistance entropy generation channel aspect ratio |
| title | A numerical investigation of heat transfer and pressure drop in a novel cylindrical heat sink with helical minichannels |
| title_full | A numerical investigation of heat transfer and pressure drop in a novel cylindrical heat sink with helical minichannels |
| title_fullStr | A numerical investigation of heat transfer and pressure drop in a novel cylindrical heat sink with helical minichannels |
| title_full_unstemmed | A numerical investigation of heat transfer and pressure drop in a novel cylindrical heat sink with helical minichannels |
| title_short | A numerical investigation of heat transfer and pressure drop in a novel cylindrical heat sink with helical minichannels |
| title_sort | numerical investigation of heat transfer and pressure drop in a novel cylindrical heat sink with helical minichannels |
| topic | cylindrical helical minichannels heat sink thermal performance factor thermal resistance entropy generation channel aspect ratio |
| url | https://jhmtr.semnan.ac.ir/article_2580_08677c9f4be05c35ecea551e243b5ce0.pdf |
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