Predicting heat transfer for low- and high-frequency central-orifice synthetic jets

Name: Predicting heat transfer for low- and high-frequency central-orifice synthetic jets
Author: Ikhlaq, Muhammad, Ghaffari, Omidreza, Arık, Mehmet

İsim	Predicting heat transfer for low- and high-frequency central-orifice synthetic jets
Yazar	Ikhlaq, Muhammad, Ghaffari, Omidreza, Arık, Mehmet
Basım Tarihi:	2016-04
Basım Yeri	- IEEE
Konu	High-frequency synthetic jet, Piezoelectric actuator, Round jet, Synthetic jet, Thermal management of microelectronics
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	2156-3950
Kayıt Numarası	a054ef55-8dde-4b6c-97f8-373f5cc113ce
Lokasyon	Mechanical Engineering
Tarih	2016-04
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	As electronic devices are becoming more compact each day, the more effective and efficient active cooling technologies are needed. Microfluidic devices, such as synthetic jets, serve as a potential candidate to fulfill the thermal management needs of the next generation electronics. An experimental and computational study has been performed for circular central-orifice synthetic jets. First, a series of experiments was performed to quantify the actuator deflection, air velocity, heat transfer augmentation, and power consumption for central-orifice synthetic jets. Later, a computational study was performed utilizing the same boundary conditions in order to predict the deflection of the diaphragm. The experiments were conducted on three different types of synthetic jets, namely, low-, medium-, and high-frequency synthetic jets. Although a number of correlations were proposed for the prediction of Nu number for slot synthetic jets, no correlation was found to predict the average Nu number for a synthetic jet with a round orifice. Therefore, two correlations were developed, one for low- and medium-frequency synthetic jets and the other for high-frequency synthetic jets to predict the heat transfer coefficient as a function of the geometry, position, and operating condition for impinging flows. The proposed correlations are able to predict the impingement heat transfer of a synthetic jet with an accuracy of ±25% for a wide range of operating conditions and geometrical variables. Normalized frequency had the minimum impact on the average Nu number of a high-frequency synthetic jet compared with dimensionless distance, both have moderate impact on low- and medium-frequency jets.
DOI	10.1109/TCPMT.2016.2523809
Cilt	6

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Predicting heat transfer for low- and high-frequency central-orifice synthetic jets

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

Basım Tarihi 2016-04

Basım Yeri - IEEE

Konu High-frequency synthetic jet, Piezoelectric actuator, Round jet, Synthetic jet, Thermal management of microelectronics

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 2156-3950

Kayıt Numarası a054ef55-8dde-4b6c-97f8-373f5cc113ce

Lokasyon Mechanical Engineering

Tarih 2016-04

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

Örnek Metin As electronic devices are becoming more compact each day, the more effective and efficient active cooling technologies are needed. Microfluidic devices, such as synthetic jets, serve as a potential candidate to fulfill the thermal management needs of the next generation electronics. An experimental and computational study has been performed for circular central-orifice synthetic jets. First, a series of experiments was performed to quantify the actuator deflection, air velocity, heat transfer augmentation, and power consumption for central-orifice synthetic jets. Later, a computational study was performed utilizing the same boundary conditions in order to predict the deflection of the diaphragm. The experiments were conducted on three different types of synthetic jets, namely, low-, medium-, and high-frequency synthetic jets. Although a number of correlations were proposed for the prediction of Nu number for slot synthetic jets, no correlation was found to predict the average Nu number for a synthetic jet with a round orifice. Therefore, two correlations were developed, one for low- and medium-frequency synthetic jets and the other for high-frequency synthetic jets to predict the heat transfer coefficient as a function of the geometry, position, and operating condition for impinging flows. The proposed correlations are able to predict the impingement heat transfer of a synthetic jet with an accuracy of ±25% for a wide range of operating conditions and geometrical variables. Normalized frequency had the minimum impact on the average Nu number of a high-frequency synthetic jet compared with dimensionless distance, both have moderate impact on low- and medium-frequency jets.

DOI 10.1109/TCPMT.2016.2523809

Cilt 6