Numerical investigation of the influence of nozzle geometrical parameters on thrust of synthetic jet underwater

Geng, Lei; Hu, Zhiqiang; Yang, Lin

doi:10.1016/j.sna.2017.11.018

Cited by 6 publications

(3 citation statements)

References 36 publications

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“…The biggest cooling improvement was achieved with the channel design configuration using two SJs running at 180° out-of-phase and 2 mm orifice spacing. Geng et al, [45] has found that when the nozzle diameter is small, the thrust is driven by velocity. While the thrust is acceleration-dominated when the diameter is large.…”

Section: Working Principlesmentioning

confidence: 99%

“…An earlier attempt had been made to explore the SJ effect through numerical simulation research. In order to simulate the moving diaphragm of the jet as a moving wall boundary, user-defined function (UDF) has been used [29,40,45,52,55]. The governing equations of continuity, momentum and energy based on URANS (Unsteady Reynolds Averaged Navier-Stokes) has been mostly used [26,46,48,49,52,55].…”

Section: Numerical Approachmentioning

confidence: 99%

“…Geng et al, [45] and Hoh et al, [47] have runs the simulations with ANSYS Fluent while take into account the flow as incompressible and in transient state. The pressure-velocity coupling scheme is chosen to be the pressure implicit with the splitting of operators (PISO).…”

Section: Numerical Approachmentioning

confidence: 99%

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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: 99%