Comparison of synthetic and steady air jets for impingement heat transfer over vertical surfaces

Name: Comparison of synthetic and steady air jets for impingement heat transfer over vertical surfaces
Author: Arık, Mehmet, Sharma, R., Lustbader, J., He, X.

İsim	Comparison of synthetic and steady air jets for impingement heat transfer over vertical surfaces
Yazar	Arık, Mehmet, Sharma, R., Lustbader, J., He, X.
Basım Tarihi:	2012
Basım Yeri	- IEEE
Konu	Cooling, Jets, Low-power electronics, Natural convection, Nozzles, Reliability, Thermal management (packaging), Turbulence
Tür	Belge
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	978-1-4244-9531-3
Kayıt Numarası	9d540e57-af81-43fb-9661-00ee6cef9397
Lokasyon	Mechanical Engineering
Tarih	2012
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	Natural convection air cooling is the method of choice for many low-power electronics applications due to cost, availability, and reliability considerations. This method is not only limited to low-power applications, but is also constrained by the buoyancy dependence of the flow. Therefore, further enhancement of natural convection is needed. Enhanced natural convection allows higher heat dissipation while maintaining the simplicity of passive cooling. Synthetic jet devices operating on the microfluidics principle provide unique cooling advantages for local cooling with high coefficients of performance. Synthetic jets used in the current study are piezoelectrically driven, small-scale, pulsating devices capable of producing highly turbulent jets formed by periodic entrainment and expulsion of the fluid through an orifice. The compactness of the jet actuator coupled with the high exit air velocities can significantly reduce the size of thermal management systems. In this paper, we present experimental results for impingement heat transfer for both steady and unsteady jets over a Reynolds number range of 100 to 3,000. A range of nozzle-to-plate surface distances is discussed. To mimic a comparable electronics component, we used a 25.4-mm square heated surface.
DOI	10.1109/ITHERM.2012.6231578

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Comparison of synthetic and steady air jets for impingement heat transfer over vertical surfaces

Yazar Arık, Mehmet, Sharma, R., Lustbader, J., He, X.

Basım Tarihi 2012

Basım Yeri - IEEE

Konu Cooling, Jets, Low-power electronics, Natural convection, Nozzles, Reliability, Thermal management (packaging), Turbulence

Tür Belge

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 978-1-4244-9531-3

Kayıt Numarası 9d540e57-af81-43fb-9661-00ee6cef9397

Lokasyon Mechanical Engineering

Tarih 2012

Notlar Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Örnek Metin Natural convection air cooling is the method of choice for many low-power electronics applications due to cost, availability, and reliability considerations. This method is not only limited to low-power applications, but is also constrained by the buoyancy dependence of the flow. Therefore, further enhancement of natural convection is needed. Enhanced natural convection allows higher heat dissipation while maintaining the simplicity of passive cooling. Synthetic jet devices operating on the microfluidics principle provide unique cooling advantages for local cooling with high coefficients of performance. Synthetic jets used in the current study are piezoelectrically driven, small-scale, pulsating devices capable of producing highly turbulent jets formed by periodic entrainment and expulsion of the fluid through an orifice. The compactness of the jet actuator coupled with the high exit air velocities can significantly reduce the size of thermal management systems. In this paper, we present experimental results for impingement heat transfer for both steady and unsteady jets over a Reynolds number range of 100 to 3,000. A range of nozzle-to-plate surface distances is discussed. To mimic a comparable electronics component, we used a 25.4-mm square heated surface.

DOI 10.1109/ITHERM.2012.6231578