Heat transfer characteristics of piston-driven synthetic jet

Jacob, Arun; Shafi, K. A.; Roy, Kousik

doi:10.1016/j.ijft.2021.100104

Cited by 10 publications

(4 citation statements)

References 15 publications

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“…The flow field would be significantly altered by modifying either of the two parameters separately. The study's findings by Jacob et al, [23] indicate that heat transmission increases as frequency rises. At low H/d, there is recirculation and an air entrainment effect, which has an impact on heat transferability.…”

Section: Working Principlesmentioning

confidence: 89%

Current Review on Numerical Simulation of Synthetic Jet (SJ) Cooling

Radhiah

Firdaus

Yusof

2023

CFDL

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This paper reviews the working principles and numerical approach for the synthetic jet cooling in the previous studies. It is essential to reviews relevant previous research within the study scope in order to further enhance the improvement of synthetic jet technology. Furthermore, numerical approach can cut the cost and save time compared to experimental works. Numerical simulation is crucial to expedite the synthetic jet product enhancement as it opens up big potential in electronic device application. Studies carried out by many scholars within the scope of this publication have demonstrated that resonance frequency enhances the performance of synthetic jet. Reynold numbers vary with frequency, and greater Reynold numbers produced higher heat transfer coefficients. The majority of researchers have also chosen the cylindrical cavity type because it offers superior velocity output, which improves cooling performance. According to previous studies, a smaller diameter leads to a higher velocity output and a higher Reynold number

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Section: Working Principlesmentioning

confidence: 89%

Current Review on Numerical Simulation of Synthetic Jet (SJ) Cooling

Radhiah

Firdaus

Yusof

2023

CFDL

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“…It can be seen that as the pressure increases the average Nusselt number also increases. This is due to the fact that as the pressure increases the jet acquires more strength [2,11,12,25]. An increase in the pump's flowrate may be accomplished by the strategic use of the vibrator's resonant frequency [19,20].…”

Section: Frequencymentioning

confidence: 99%

A Review of Experimentation of Synthetic Jet Cooling

Ahmad Faiz Ahmad Kamil,

Sh Mohd Firdaus Sh Abdul Nasir,

Hamid Yusoff

et al. 2023

ARFMTS

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As the electronic device is becoming more advance, the traditional cooling fan in becoming more constrained to its limited dimensions or space. The compact electronic devices with substantial power requirements and tiny electronic components are prone to overheating. This is because these devices dimensions make heat transmission less efficient, making the overheating more likely. Because of the increasing need for smaller devices, makers of electronic components are being compelled to pack transistors into ever-smaller places. This has led to an increase in the amount of overheating that occurs because thermal flow is being constrained. The current period, with its thin and compact electronics, calls for an improved method of cooling, and the synthetic jet-cooling technique will be the subject of the attention of this particular piece of research. The purpose of this study is to discuss the working principles and numerical technique for the synthetic jet cooling that was used in the earlier investigations which investigate the frequency, the distance between synthetic jet and heater, size of the synthetic jet nozzle and size of the synthetic jet volume. In order to make additional progress in enhancing the advancement of synthetic jet technology, it is vital to reviews relevant past research that falls within the area of the study. In addition, as compared to experimental efforts, the numerical technique may result in cost savings and time savings. The use of numerical simulation is essential for accelerating the improvement of the synthetic jet product since it opens up a large potential in the use of electronic devices.

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“…These variables lead to variations in flow structure, which affects the features of wall jets, vortex behaviour, and the high-speed zone above the target wall. Jacob et al (2021) investigated the effect of jet frequency and distance between the orifice and the heated plate. Experimental and numerical techniques were used to evaluate the heat transfer characteristics of synthetic air jets.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigations on the effect of frequency on synthetic jet impingement cooling using multiple orifice

Vaishnav,

R. Leena

2023

Jnl. Appl. Sci. Eng. Tech. and Mgmt.

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A synthetic jet generally consists of a cavity with a driver attached on one side and an orifice on the opposite side. When the driver moves back and forth, the jet will generate an unsteady flow through the orifice and the flow will move downstream to a surface forming an impinging flow. When the jet is in the ejection cycle, the diaphragm will expel flow out from the orifice and form a vortex near the orifice. If the propulsion is large enough, the vortex will move downstream before the jet orifice flow reverses and starts to suck in flow. The computational process is carried out using the commercial software ANSYS Fluent. In this study, the heat transfer characteristics of synthetic jet impingement cooling with multiple orifice (1 and 2 orifices) are analyze with different operating frequencies (f=100 Hz to f=500 Hz and f=1 Hz to f=5 Hz) with different Reynolds numbers (Re=10000 and 20000) The results demonstrate that high frequency synthetic jets show better heat removal capacity than lower frequency at the same Reynolds number.

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Heat transfer characteristics of piston-driven synthetic jet

Cited by 10 publications

References 15 publications

Current Review on Numerical Simulation of Synthetic Jet (SJ) Cooling

Current Review on Numerical Simulation of Synthetic Jet (SJ) Cooling

A Review of Experimentation of Synthetic Jet Cooling

Numerical investigations on the effect of frequency on synthetic jet impingement cooling using multiple orifice

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