We aimed to elucidate the behavior of impinging synthetic jets against the surface of a wall placed near the slot exit. Synthetic jets with various frequencies were used, and a rectangular body of finite length (target plate) was placed downstream of these jets. The flows were visualized by the smoke-wire method and numerical simulation, and the velocity distributions around the target plate were measured using a hot-wire anemometer. The flow fields of steady continuous jets and synthetic jets with unsteady characteristics were compared, and their flow characteristics were explored. We experimentally found that the flow field depends on the dimensionless target plate length and dimensionless frequency of the synthetic jet for a fixed distance from the slot to the target plate. Furthermore, at low frequencies, the behavior after impinging the target plate was similar to that observed for a continuous jet. Additionally, it has been confirmed that these results qualitatively agree with the numerical simulation results.
Impinging jets Flow visualization Numerical simulation Synthetic jets Velocity distribution
Primary Language | English |
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Subjects | Mechanical Engineering (Other) |
Journal Section | Research Articles |
Authors | |
Early Pub Date | December 14, 2023 |
Publication Date | December 31, 2023 |
Acceptance Date | October 20, 2023 |
Published in Issue | Year 2023 Volume: 7 Issue: 4 |
Journal of Energy Systems is the official journal of
European Conference on Renewable Energy Systems (ECRES) and
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