A computational study on the momentum and heat transfer distribution of a low frequency round impinging synthetic jet

Name: A computational study on the momentum and heat transfer distribution of a low frequency round impinging synthetic jet
Author: Ikhlaq, M., Dogruoz, B., Ghaffari, O., Arık, Mehmet

İsim	A computational study on the momentum and heat transfer distribution of a low frequency round impinging synthetic jet
Yazar	Ikhlaq, M., Dogruoz, B., Ghaffari, O., Arık, Mehmet
Basım Tarihi:	2015
Basım Yeri	- ASME
Konu	Momentum, Heat transfer
Tür	Belge
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	978-0-7918-5690-1
Kayıt Numarası	7af210e1-65c8-4cd6-a819-155dd4cbf535
Lokasyon	Mechanical Engineering
Tarih	2015
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	Impinging synthetic jets have been considered as a possible solution for cooling miniature structures. It has been shown that synthetic jet performance is sensitive to the distance between the jet nozzle and the target surface where enhancement of heat transfer decreases with a reduction in nozzle-to-target plate distance. At low nozzle-to-target spacing, no detailed information about the momentum and temperature fields have been shown in prior literature, therefore further investigation is needed. In this study, a 3-D computational fluid dynamics model was constructed to determine the flow and temperature fields of a meso-scale synthetic jet at a nozzle-to-target surface spacing of H/D = 2, ReD,j= 1400 and f = 500 Hz. Unlike the majority of previous computational studies, rather than specifying the boundary conditions at the nozzle, the flow inside the synthetic jet device was solved by specifying the time dependent boundary conditions on the vibrating diaphragm and utilizing the moving mesh technique. Local surface pressure and heat transfer coefficient distributions were determined and discussed. It was found that the pulsating flow at the nozzle exit for a round jet generates vortex rings and these rings seem to have some considerable effects on the target surface profiles.

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A computational study on the momentum and heat transfer distribution of a low frequency round impinging synthetic jet

Yazar Ikhlaq, M., Dogruoz, B., Ghaffari, O., Arık, Mehmet

Basım Tarihi 2015

Basım Yeri - ASME

Konu Momentum, Heat transfer

Tür Belge

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 978-0-7918-5690-1

Kayıt Numarası 7af210e1-65c8-4cd6-a819-155dd4cbf535

Lokasyon Mechanical Engineering

Tarih 2015

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

Örnek Metin Impinging synthetic jets have been considered as a possible solution for cooling miniature structures. It has been shown that synthetic jet performance is sensitive to the distance between the jet nozzle and the target surface where enhancement of heat transfer decreases with a reduction in nozzle-to-target plate distance. At low nozzle-to-target spacing, no detailed information about the momentum and temperature fields have been shown in prior literature, therefore further investigation is needed. In this study, a 3-D computational fluid dynamics model was constructed to determine the flow and temperature fields of a meso-scale synthetic jet at a nozzle-to-target surface spacing of H/D = 2, ReD,j= 1400 and f = 500 Hz. Unlike the majority of previous computational studies, rather than specifying the boundary conditions at the nozzle, the flow inside the synthetic jet device was solved by specifying the time dependent boundary conditions on the vibrating diaphragm and utilizing the moving mesh technique. Local surface pressure and heat transfer coefficient distributions were determined and discussed. It was found that the pulsating flow at the nozzle exit for a round jet generates vortex rings and these rings seem to have some considerable effects on the target surface profiles.