An investigation into feasibility of impingement heat transfer and acoustic abatement of meso scale synthetic jets

Arık, Mehmet

doi:10.1016/j.applthermaleng.2006.09.027

Cited by 102 publications

(34 citation statements)

References 12 publications

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“…A cavity communicating with the external ambient through a small orifice is the path for suction and expulsion of a high velocity, high momentum fluid (see Figure 11- 13). Within this field, a large number of theoretical and experimental results have been presented, and synthetic jet thermal management has attracted interest from both academia and industry [14,15]. We have extensively investigated synthetic jet devices and their unsteady impingement heat transfer.…”

Section: Synthetic Jet Technologymentioning

confidence: 99%

Environmental and economical impact of LED lighting systems and effect of thermal management

Arık

Setlur

2009

Int. J. Energy Res.

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SUMMARYSolid-state lighting (SSL) technologies such as light emitting diodes (LEDs) have been of interest for the last 15 years. This article focuses on inorganic LED technology and their evolving applications, energy efficiency, and economic impact as well as the effect of thermal management on LED lighting systems. The efficacy of the best commercial 1 W LED packages currently surpasses 120 lm/W, which is more efficient than typical metal-halide and fluorescent lamps. This high efficacy will eventually allow LED lighting systems to be used in specialty and general illumination applications. However, higher lumen requirements for LED systems will inevitably lead to significant thermal challenges at both the chip and the system level that need to be addressed to enable practical applications at low costs. In this article, the basics of LED lighting will be discussed first. It will be followed by the potential economic benefits for high efficiency LED lighting systems in the general illumination market. We will then discuss the thermal challenges and possible candidate cooling technologies in LED lighting systems.

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Section: Synthetic Jet Technologymentioning

confidence: 99%

Environmental and economical impact of LED lighting systems and effect of thermal management

Arık

Setlur

2009

Int. J. Energy Res.

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“…Yassour et al [49] experimentally investigated the annular-impinging SJ. Since that time, SJs for cooling applications have been investigated by many other authors [50][51][52][53][54][55][56][57][58], including previous work e.g. [59].…”

Section: Synthetic Jetsmentioning

confidence: 99%

“…Arik [54] performed a heat transfer experiment using meso-scale SJ meant for thermal management of electronics. The experiment with SJ impingement onto the flat plate had a heat transfer coefficient enhancement from 4.5 to 10 over the natural convection regime (dependent on heated plate size).…”

Section: Sj Impingement Heat Transfermentioning

confidence: 99%

Synthetic and Continuous Jets Impinging on a Circular Cylinder

Broučková

Trávníček

Vít

2018

Heat Transfer Engineering

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Declaration of authorshipI hereby confirm that the submitted work is entirely my own and was written only with help of referenced literature. iv AbstractSynthetic and continuous jets impinging onto an heated circular cylinder were investigated.The study was performed experimentally. For this reason, a piezoelectrically driven actuator with water as the working fluid was designed. The basic parameters of the experiments were: the slot nozzle width was 0.36 mm, the aspect ratio of the slot was 111, the cylinder diameter was 1.2 mm, and the cylinder-to-nozzle spacing related to the slot width was 5-21.

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“…It was observed by Arik 2 that SJA jet noise can be as high as 73 dB when operating at a resonant frequency of 3.6 kHz for a peak jet velocity of 90 m/s out of a 1 mm orifice. Abatement techniques such as passive mufflers were shown to reduce this SJA noise down to 30 dB, but at a cost of significantly increasing the volume of the actuator unit to a level that is unviable for practical implementation.…”

Section: Introductionmentioning

confidence: 99%

Towards the noise reduction of piezoelectrical-driven synthetic jet actuators

Jabbal

Jeyalingam

2017

Sensors and Actuators A: Physical

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This paper details an experimental investigation aimed at reducing the noise output of piezoelectrical-driven synthetic jet actuators without compromising peak jet velocity. Specifically, the study considers double-chamber ('back-to-back') actuators for anti-phase noise suppression and corrugated-lobed orifices as a method to enhance turbulent mixing of the jets to suppress jet noise. The study involved the design, manufacture and bench test of interchangeable actuator hardware. Hot-wire anemometry and microphone recordings were employed to acquire velocity and noise measurements respectively for each chamber configuration and orifice plate across a range of excitation frequencies and for a fixed input voltage. The data analysis indicated a 32% noise reduction (20 dBA) from operating a singlechamber, circular orifice SJA to a double-chamber, corrugated-lobed orifice SJA at the Helmholtz resonant frequency. Results also showed there was a small reduction in peak jet velocity of 7% (~3 m/s) between these two cases based on orifices of the same discharge area.

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An investigation into feasibility of impingement heat transfer and acoustic abatement of meso scale synthetic jets

Cited by 102 publications

References 12 publications

Environmental and economical impact of LED lighting systems and effect of thermal management

Environmental and economical impact of LED lighting systems and effect of thermal management

Synthetic and Continuous Jets Impinging on a Circular Cylinder

Towards the noise reduction of piezoelectrical-driven synthetic jet actuators

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