An experimental study of impinging synthetic jets for heat transfer augmentation

Name: An experimental study of impinging synthetic jets for heat transfer augmentation
Author: Ghaffari, Omidreza, Ikhlaq, Muhammad, Arık, Mehmet

İsim	An experimental study of impinging synthetic jets for heat transfer augmentation
Yazar	Ghaffari, Omidreza, Ikhlaq, Muhammad, Arık, Mehmet
Basım Tarihi:	2015-07
Basım Yeri	- World Scientific Publishing Co
Konu	Synthetic jet, Small jet to surface spacing, Impinging jet, Heat transfer, Electronics cooling, Cooling efficiency, COP
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1229-862X
Kayıt Numarası	0a64edf5-c171-4fc9-9c31-6aa774cc9097
Lokasyon	Mechanical Engineering
Tarih	2015-07
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	According to recent trends in the field of miniature electronics, the need for compact cooling solutions compatible with very thin profiles and small footprint areas is inevitable. Impinging synthetic jets are recognized as a promising technique for cooling miniature surfaces like laptops, tablets, smart phones and slim TV systems. Effect of jet to cooled surface spacing is crucial in cooling performance as well as predicting Nusselt number for such spacing. An experimental study has been performed to investigate the cooling performance of two different synthetic jets actuated with piezoelectric actuators cooling over a vertical surface. Results showed that a major degradation of heat transfer when jets are close to the surface is occurred. Slot synthetic jets showed a better performance in terms of coefficient of performance (COP) than semi-confined circular jets for small jet to surface spacing. Later, a correlation is proposed for predicting Nu number for a semi-confined circular synthetic jet accounting the effects of Re number (500≤Rej≤1150500≤Rej≤1150), jet-to-surface spacing (H∕D=2H∕D=2 and H∕D=4H∕D=4) and the stroke length (1.75≤L0∕D≤4.751.75≤L0∕D≤4.75 and L0∕H<2.5L0∕H<2.5). It is found that correlation can provide predictions with an R2R2 value of over 98%.
DOI	10.1142/S2010132515500248
Cilt	23

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An experimental study of impinging synthetic jets for heat transfer augmentation

Yazar Ghaffari, Omidreza, Ikhlaq, Muhammad, Arık, Mehmet

Basım Tarihi 2015-07

Basım Yeri - World Scientific Publishing Co

Konu Synthetic jet, Small jet to surface spacing, Impinging jet, Heat transfer, Electronics cooling, Cooling efficiency, COP

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1229-862X

Kayıt Numarası 0a64edf5-c171-4fc9-9c31-6aa774cc9097

Lokasyon Mechanical Engineering

Tarih 2015-07

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

Örnek Metin According to recent trends in the field of miniature electronics, the need for compact cooling solutions compatible with very thin profiles and small footprint areas is inevitable. Impinging synthetic jets are recognized as a promising technique for cooling miniature surfaces like laptops, tablets, smart phones and slim TV systems. Effect of jet to cooled surface spacing is crucial in cooling performance as well as predicting Nusselt number for such spacing. An experimental study has been performed to investigate the cooling performance of two different synthetic jets actuated with piezoelectric actuators cooling over a vertical surface. Results showed that a major degradation of heat transfer when jets are close to the surface is occurred. Slot synthetic jets showed a better performance in terms of coefficient of performance (COP) than semi-confined circular jets for small jet to surface spacing. Later, a correlation is proposed for predicting Nu number for a semi-confined circular synthetic jet accounting the effects of Re number (500≤Rej≤1150500≤Rej≤1150), jet-to-surface spacing (H∕D=2H∕D=2 and H∕D=4H∕D=4) and the stroke length (1.75≤L0∕D≤4.751.75≤L0∕D≤4.75 and L0∕H<2.5L0∕H<2.5). It is found that correlation can provide predictions with an R2R2 value of over 98%.

DOI 10.1142/S2010132515500248

Cilt 23