A heat sink with piezoelectric vibrating fins is developed through attaching piezoelectric actuators to the fins of a heat sink, and the heat transfer characteristics of the heat sink are experimentally investigated. Thermal performance improvement of the heat sink by the vibration of the fins is observed compared to the thermal performance of a natural convection heat sink with static fins under a fixed heat sink geometry condition. The thermal performance of the heat sink changes as the vibration amplitude of the fins or the vibration frequency of the fins changes. Particularly, if the vibration frequency of the fins matches up to the natural frequency of the fins, the vibration amplitude is significantly increased by resonance and the thermal performance also increases. The natural frequency of the fins changes with the heat sink temperature because the geometry of the fins changes and the properties of the fins change due to the temperature change.
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2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4938-5
PROCEEDINGS PAPER
Thermal Performance Improvement of a Heat Sink With Piezoelectric Vibrating Fins
Hee Seung Park,
Hee Seung Park
KAIST - Korea Advanced Institute of Science and Technology, Daejeon, Korea
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Sung Jin Kim
Sung Jin Kim
KAIST - Korea Advanced Institute of Science and Technology, Daejeon, Korea
Search for other works by this author on:
Hee Seung Park
KAIST - Korea Advanced Institute of Science and Technology, Daejeon, Korea
Sung Jin Kim
KAIST - Korea Advanced Institute of Science and Technology, Daejeon, Korea
Paper No:
IHTC14-22552, pp. 495-501; 7 pages
Published Online:
March 1, 2011
Citation
Park, HS, & Kim, SJ. "Thermal Performance Improvement of a Heat Sink With Piezoelectric Vibrating Fins." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 3. Washington, DC, USA. August 8–13, 2010. pp. 495-501. ASME. https://doi.org/10.1115/IHTC14-22552
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