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dc.contributor.authorParsa, Shadi Habibi
dc.contributor.authorGhaffari, Omidreza
dc.contributor.authorSolovitz, S.
dc.contributor.authorArık, Mehmet
dc.description.abstractPiezoelectric fans are low-form-factor cooling devices, which have gained recent attention for electronics cooling. These devices feature a vibrating blade, which sheds vortices from its tip during its motion. The performance of a piezoelectric fan is based on its location, orientation, and operating condition. Thus, we investigated the heat transfer and flow field of an impinging flow produced by a piezoelectric fan. The heat transfer tests are conducted using a vertical, 2.54 cm × 2.54 cm copper heater, which is configured with the piezoelectric fan positioned along its centerline. The fan is operated at its fundamental frequency of 60 Hz, where it achieves maximum heat transfer and fan deflection. There is significant heat transfer degradation with increasing heater-to-fan spacing and off-resonance operating conditions. To better understand this thermal performance, we require information about the flow field produced by this pulsating flow. Hence, we performed particle image velocimetry (PIV) measurements of the flow field for free and impinging cases with different heater-to-fan spacing. We used instantaneous and time-averaged PIV to depict the response in a region within approximately two times the fan oscillation amplitude. In this region, there was a stagnation flow close to the heater, which would result in significant heat transfer. However, this flow also featured high-magnitude velocity vectors towards the sides of the heater rather than towards its center, which would likely result in non-uniform heat transfer.en_US
dc.relation.ispartofASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannelsen_US
dc.titleFlow and heat transfer study of an impinging piezoelectric fan over a vertical surfaceen_US
dc.typeConference paperen_US
dc.contributor.departmentÖzyeğin University
dc.contributor.authorID(ORCID 0000-0002-9505-281X & YÖK ID 124782) Arık, Mehmet
dc.contributor.ozuauthorArık, Mehmet
dc.subject.keywordsElectronics coolingen_US
dc.subject.keywordsHeat transferen_US
dc.subject.keywordsParticle image velocimetryen_US
dc.subject.keywordsPiezoelectric fanen_US
dc.subject.keywordsResonance frequencyen_US
dc.contributor.ozugradstudentParsa, Shadi Habibi
dc.contributor.ozugradstudentGhaffari, Omidreza
dc.relation.publicationcategoryConference Paper - International - Institutional Academic Staff and Graduate Student and PhD Student

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