The effect of Reynolds number on the aerodynamic performance of micro radial flow fans
Elevated heat dissipation and simultaneous reductions in package sizes are well documented for a range of electronics systems. The problem is heightened in portable systems where the space available for the implementation of an active cooling methodology is limited and conventional cooling products...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2005
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| _version_ | 1797084707861561344 |
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| author | Hanly, K Grimes, R Walsh, E Rodgers, B Punch, J ASME |
| author_facet | Hanly, K Grimes, R Walsh, E Rodgers, B Punch, J ASME |
| author_sort | Hanly, K |
| collection | OXFORD |
| description | Elevated heat dissipation and simultaneous reductions in package sizes are well documented for a range of electronics systems. The problem is heightened in portable systems where the space available for the implementation of an active cooling methodology is limited and conventional cooling products are too large. Using micro scale radial flow fans is a potential solution. However, little is known about the aerodynamic effects of reducing the fan scale and therefore Reynolds number to the extent required for typical portable electronic applications. This paper investigates this issue, by quantifying the reduction in aerodynamic performance which accompanies the reductions in scale. To do this, geometrically similar radial flow fans were fabricated with diameters ranging from 80 to 10mm. Measurements of the rotors' geometries are presented, showing a high degree of geometric similarity between the fans. The aerodynamic performance of each of the fans was measured. Non-dimensional performance of each of the larger fans were almost identical, while the performance plot of the smallest fan differed significantly from the others. The paper tentatively concludes that a fundamental change in flow phenomena has emerged in the smallest scale fan which has altered its aerodynamic characteristics. Copyright © 2005 by ASME. |
| first_indexed | 2024-03-07T01:58:46Z |
| format | Journal article |
| id | oxford-uuid:9ca37ca9-2270-4438-97f2-24f0a03e51d6 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:58:46Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:9ca37ca9-2270-4438-97f2-24f0a03e51d62022-03-27T00:37:20ZThe effect of Reynolds number on the aerodynamic performance of micro radial flow fansJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9ca37ca9-2270-4438-97f2-24f0a03e51d6EnglishSymplectic Elements at Oxford2005Hanly, KGrimes, RWalsh, ERodgers, BPunch, JASMEElevated heat dissipation and simultaneous reductions in package sizes are well documented for a range of electronics systems. The problem is heightened in portable systems where the space available for the implementation of an active cooling methodology is limited and conventional cooling products are too large. Using micro scale radial flow fans is a potential solution. However, little is known about the aerodynamic effects of reducing the fan scale and therefore Reynolds number to the extent required for typical portable electronic applications. This paper investigates this issue, by quantifying the reduction in aerodynamic performance which accompanies the reductions in scale. To do this, geometrically similar radial flow fans were fabricated with diameters ranging from 80 to 10mm. Measurements of the rotors' geometries are presented, showing a high degree of geometric similarity between the fans. The aerodynamic performance of each of the fans was measured. Non-dimensional performance of each of the larger fans were almost identical, while the performance plot of the smallest fan differed significantly from the others. The paper tentatively concludes that a fundamental change in flow phenomena has emerged in the smallest scale fan which has altered its aerodynamic characteristics. Copyright © 2005 by ASME. |
| spellingShingle | Hanly, K Grimes, R Walsh, E Rodgers, B Punch, J ASME The effect of Reynolds number on the aerodynamic performance of micro radial flow fans |
| title | The effect of Reynolds number on the aerodynamic performance of micro radial flow fans |
| title_full | The effect of Reynolds number on the aerodynamic performance of micro radial flow fans |
| title_fullStr | The effect of Reynolds number on the aerodynamic performance of micro radial flow fans |
| title_full_unstemmed | The effect of Reynolds number on the aerodynamic performance of micro radial flow fans |
| title_short | The effect of Reynolds number on the aerodynamic performance of micro radial flow fans |
| title_sort | effect of reynolds number on the aerodynamic performance of micro radial flow fans |
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