A Criterion for the Formation of Micro Synthetic Jets
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A synthetic jet actuator is a zero net mass flow device, which under appropriate conditions generates a continuous jet always directed away from the orifice. Because of limited experimental and computational data on micro-sized jets, there is a need for a criterion to determine the onset of the sustained jet regime. A numerical study of axisymmetric micro synthetic jets for a frequency range from 250 to 50,000 Hz, orifice diameters range from 20 to 200 μm, and Reynolds numbers from 6.5 to 35 has been performed in order to identify a general jet formation criterion. The parametric study has allowed us to develop a new criterion for the onset of micro synthetic jets with Stokes numbers less than 7.
2005 ◽
Vol 109
(1092)
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pp. 89-97
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2005 ◽
Vol 19
(28n29)
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pp. 1619-1622
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2016 ◽
Vol 231
(2)
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pp. 107-118
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