Experimental study of synthetic jets with rectangular orifice for electronic cooling

Lee, C.Y.Y.; Woyciekoski, Marcos Leandro; Copetti, Jacqueline Biancon

doi:10.1016/j.expthermflusci.2016.06.007

Cited by 33 publications

(3 citation statements)

References 15 publications

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“…They concluded that the smaller circular orifice produces higher maximum pulse jet velocity. Lee et al 18 experimentally studied the effect of cavity sizes and the aspect ratio of a rectangular orifice on synthetic jets. The heat transfer is improved by orifices with a smaller aspect ratio and larger hydraulic diameter.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of heat transfer in a synthetic jet actuated by piston cylinder

Jacob¹,

Shafi²,

Roy³

2021

Advances in Mechanical Engineering

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Modern electronics demand more powerful cooling systems due to an increase in heat dissipation. The traditional cooling techniques reached their limit and the synthetic jet impingement arises as a promising method for cooling of modern electronic systems. This paper presents the experimental studies on the heat transfer characteristics of a synthetic jet. The synthetic jet is driven by a piston actuator. The effects of dimensionless parameters like the distance between the orifice and heater plate (Z/D), the ratio of stroke length to diameter of orifice ( L/D), Stokes number, and Reynolds number are discussed. The effect of orifice geometry, number of orifices are also presented. The results indicate that the Z/D and Stokes number have a significant influence on the heat transfer rate. As the Stokes number increases the heat transfer increases due to an increase in axial momentum and turbulence in the flow direction. For circular orifice and at high Z/D, the L/D ratio should be higher for better heat transfer. Rectangular orifice performs better than square and circular geometries. When compared to single jet multiple jets have a higher heat transfer rate. Maximum and minimum values of normalized pressure ( Pnr) are achieved for high Stokes number and smaller areas of the orifice.

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Section: Introductionmentioning

confidence: 99%

Enhancement of heat transfer in a synthetic jet actuated by piston cylinder

Jacob¹,

Shafi²,

Roy³

2021

Advances in Mechanical Engineering

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“…On the other hand, rectangular synthetic jet impingement has recently drawn considerable attention for its promising performance in heat transfer, and some preliminary researches have been made [18,[37][38][39][40]. However, unlike the detailed studies on circular orifice synthetic jet impingement in both flow and heat transfer, only limited attentions were recently paid to the flow characterisation of the rectangular orifice synthetic jet impingement.…”

Section: Introductionmentioning

confidence: 99%

Volumetric flow characterisation of a rectangular orifice impinging synthetic jet with single-camera light-field PIV

Zhao

Ding

Shi

et al. 2021

Experimental Thermal and Fluid Science

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“…In this paper, the benchmarking will be done over a synthetic jet, which can constitute a source of subsonic, transonic and supersonic flows. Moreover, since the applications of the synthetic jet are multiple, like flow control [15,16] or cooling [17,18], with significant research on this topic [19][20][21][22], this benchmark takes interest for both applied and theoretical experimental research. This choice also provides the possibility to test the measurements methodology validity for characterizing unsteady flows with fast response.…”

Section: Introductionmentioning

confidence: 99%

Experimental Measurement Benchmark for Compressible Fluidic Unsteady Jet

et al. 2018

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A benchmark of different measurement techniques is presented to characterize the dynamic response of a synthetic jet actuator working in compressible regime. The setup involves a piston-based synthetic jet, as well as the benchmarked measurements are hot-wire, cold-wire, Laser Doppler Anemometry, pressure transducer, and Schlieren visualization. Measured flow temperatures range from 20 °C to 150 °C, pressure ranges from 0.5 atm to 4 atm, and velocity are up to 300 m/s. The extreme values of these ranges are reached in an oscillating fashion at a frequency ranging from 30 to 100 Hz. The measurements are pointing out the limitation of cold-wire measurements, due to its high thermic inertia. The results show consistency in the velocity measurements, within 10% in the worst case, between all measurement techniques and the errors are traced back to the calibration ranges, whose sensitivity is also studied.

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Experimental study of synthetic jets with rectangular orifice for electronic cooling

Cited by 33 publications

References 15 publications

Enhancement of heat transfer in a synthetic jet actuated by piston cylinder

Enhancement of heat transfer in a synthetic jet actuated by piston cylinder

Volumetric flow characterisation of a rectangular orifice impinging synthetic jet with single-camera light-field PIV

Experimental Measurement Benchmark for Compressible Fluidic Unsteady Jet

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