Experimental investigation of the thermal behavior a single-cavity and multiple-orifice synthetic jet impingement driven by electromagnetic actuator for electronics cooling

Singh, Pushpanjay K.; Sahu, Santosh Kumar; Upadhyay, Prabhat K.

doi:10.1080/08916152.2020.1825546

Cited by 22 publications

(3 citation statements)

References 57 publications

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“…This is achieved by replacing one of the walls of the synthetic jet actuator (SJA) with movable or deformable elements such as piezoelectric, acoustic (loudspeaker), or mechanical (piston) drivers. The SJAs can be used in electronic cooling [1][2][3], flow control [4][5][6], or mixing [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices

Smyk

Markowicz

2021

Applied Sciences

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The use of a chevron nozzle/orifice is one of the methods of heat transfer enhancement and noise reduction. In the case of synthetic jets, the number of papers on this topic is small. Therefore, a synthetic jet actuator with three different chevron orifices and one circular orifice is investigated. The aim of this study is to find the impact of orifice shape on centerline velocity (measured with a hot-wire anemometer) and determine if the chevron orifice reduces the generated noise. The sound pressure level was strongly dependent on the input actuator’s power, and only one chevron orifice ensured noise reduction for low power (p = 6; 8 W). At real power p = 12 W, the sound pressure level was lower for each chevron orifice actuator than in the case of the circular orifice actuator. It is shown that the application of a chevron nozzle does not have to provide noise reduction. It is important in the case of the design of new actuators that are to operate in places where noise levels should be limited (e.g., offices).

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Section: Introductionmentioning

confidence: 99%

Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices

Smyk

Markowicz

2021

Applied Sciences

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“…It was observed from the results that a maximum heat transfer performance is caused by a phase shift (maximum at a phase shift of 270 • ) between diaphragm and nozzle cycles. An experimental study was conducted by Singh et al [109] to investigate the flow and heat transfer performance of synthetic jet impingement with multiple orifices. The shapes of the multiple-orifice synthetic jet used during the study were circular, rectangular, and square.…”

Section: Excited Jetsmentioning

confidence: 99%

Heat Transfer Augmentation through Different Jet Impingement Techniques: A State-of-the-Art Review

et al. 2021

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Jet impingement is considered to be an effective technique to enhance the heat transfer rate, and it finds many applications in the scientific and industrial horizons. The objective of this paper is to summarize heat transfer enhancement through different jet impingement methods and provide a platform for identifying the scope for future work. This study reviews various experimental and numerical studies of jet impingement methods for thermal-hydraulic improvement of heat transfer surfaces. The jet impingement methods considered in the present work include shapes of the target surface, the jet/nozzle–target surface distance, extended jet holes, nanofluids, and the use of phase change materials (PCMs). The present work also includes both single-jet and multiple-jet impingement studies for different industrial applications.

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“…The SJ is used in many science areas and also in industrial applications. The most common uses are heat transfer enhancement [2][3][4][5], active flow control and jet vectoring [6][7][8], and mixing enhancement [9][10][11]. Regardless of the application, however, one of the big problems of SJA remains the high level of generated noise, which can be as high as 90 dB or more [12].…”

Section: Introductionmentioning

confidence: 99%

Impact of the Soundproofing in the Cavity of the Synthetic Jet Actuator on the Generated Noise

Smyk

Markowicz

2022

Fluids

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The synthetic jet actuator (SJA) generated high noise which limits the area of its application. In this paper, the five actuators with different types of soundproofing in the cavity were tested and compared to the classic actuator. The resistance and the sound pressure level (SPL) were measured for real power W, and frequency in a range of 20–150 Hz. The resonant frequency of actuators was designed. Only one type of soundproofing had a significant impact on the resonant frequency. The use of soundproofing in the actuator cavity increased or did not affect the generated noise at a frequency below 120 Hz and only the mineral wool significantly decreased the noise at a frequency above 120 Hz– even 7 dBA. The direction for further investigations was set.

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Experimental investigation of the thermal behavior a single-cavity and multiple-orifice synthetic jet impingement driven by electromagnetic actuator for electronics cooling

Cited by 22 publications

References 57 publications

Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices

Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices

Heat Transfer Augmentation through Different Jet Impingement Techniques: A State-of-the-Art Review

Impact of the Soundproofing in the Cavity of the Synthetic Jet Actuator on the Generated Noise

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