Abstract
Piezoelectric fans have emerged as a viable alternative for electronics cooling applications requiring low input power and noiseless operation. A piezoelectric fan is a cantilever actuated by a piezoelectric ceramic material bonded to it. The fan oscillates back and forth creating airflow when an alternating electric field is applied to this bonded piezoelectric ceramic. Forced convection induced by such an oscillating fan in an enclosure is numerically investigated. The computational model is capable of sustaining deforming fluid cells that allow large boundary movement. The moving wall boundary, modeled as large-amplitude beam deflection, initiates flow in the fluid domain which enhances convection to varying extents depending on the heat source-to-fan distance and beam deflection amplitude. The effects of these parameters on heat transfer are studied. Transition between distinct convection patterns is observed with changes in the parameters. Results are validated against experimental measurements, with good agreement.
| Original language | English (US) |
|---|---|
| Article number | IMECE2004-61145 |
| Pages (from-to) | 29-37 |
| Number of pages | 9 |
| Journal | American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD |
| Volume | 375 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2004 |
| Externally published | Yes |
| Event | 2004 ASME International Mechanical Engineering Congress and Exposition, IMECE - Anaheim, CA, United States Duration: Nov 13 2004 → Nov 19 2004 |
ASJC Scopus subject areas
- Mechanical Engineering
- Fluid Flow and Transfer Processes
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