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- W3201222481 abstract "Synthetic jet is a new technique for electronic chip cooling, which combines stagnant air to form a jet resulting from periodic diaphragm oscillations in a cavity. In this work, the heat transfer characteristics of a synthetic jet are investigated experimentally and numerically. A Piston-cylinder arrangement powers the synthetic jet through a circular orifice for the impingement of jet on the heated surface. Air is considered as the cooling medium. The major parameters identified to describe the impinging jet heat transfer are Reynolds number, frequency, ratio of jet spacing to diameter(Z/D) and nozzle geometry. Numerical studies have been carried out using the finite volume based commercial software ANSYS Fluent. The turbulent model used is k-ω model. The dimensionless distance between the nozzle and plate surface is in the range 2 to 16. Numerical results are in fair agreement with experimental results. As the frequency increases the average Nusselt number increases. High frequency synthetic jets were found to remove more heat than low frequency jets for small Z/D ratio, while low frequency jets are more effective at larger Z/D ratio. Nusselt number is maximum at the stagnation point and there occurs a secondary peak at lower Z/D ratios. Synthetic jet with rectangular orifice is more effective as compared to circular and square geometries." @default.
- W3201222481 created "2021-09-27" @default.
- W3201222481 date "2020-06-30" @default.
- W3201222481 modified "2023-10-18" @default.
- W3201222481 title "Effects of Frequency and Jet to Surface Spacing on Synthetic Jet Impingement Heat Transfer" @default.
- W3201222481 doi "https://doi.org/10.35940/ijeat.e9768.069520" @default.
- W3201222481 hasPublicationYear "2020" @default.
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