Synthetic Jets at Large Reynolds Number and Comparison to Continuous Jets ∗
نویسندگان
چکیده
Experimental measurements and flow visualization of synthetic jets and similar continuous jets are described. The dimensionless stroke length necessary to form a 2-D synthetic jet is between 5 and 10, with wider-nozzle jets consistently requiring a smaller value. Synthetic jets are wider, slower and have more momentum than similar continuous jets. Synthetic jets are generated using four nozzle widths that vary by a factor of four, and the driving frequency is varied over an order of magnitude. The resultant jets are in the range 13.5 < Lo/h < 80.8 and 695 < ReUo < 14700. In spite of the large range of stroke lengths, the near-field behavior of the synthetic jets scales with Lo/h. ∗Copyright c ©2001 by Barton Smith. Published by the American Institute of Aeronautics and Astronautics Inc., with permission. †Postdoctoral researcher, AIAA member ‡Technical Staff Member American Institute of Aeronautics and Astronautics 1
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