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Showing 1 to 3 of 3 for “"Pulsed microjets"”.
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Active noise control of supersonic impinging jet using pulsed microjets
… actuator used for active control is composed of pulsed microjets, utilizing a fraction of mass flow rate needed with steady microjets. Two means of producing pulsed microjet were introduced; one with a rotating cap, pulsing at 16 - 100Hz, and the other developed based on the principle of Hartmann …
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Active noise control in supersonic impinging jets using pulsed microjets : actuator design, reduced-order modeling
… this paper, two active control strategies using microjets are suggested to maintain a uniform, reliable, and optimal reduction of these tones over the entire range of operating conditions. In the first method, a quasi-closed loop control strategy is proposed using steady microjet injection and …
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Modeling, design, and fabrication of pulsed fluidic micro-actuators
The forced vibration of a thin flexible plate or membrane in a sealed cavity with a small opening can cause fluid to be pumped into and out-of the cavity. At particular frequencies and amplitudes of vibration, a streaming of vortex rings can occur near the orifice. These vortex rings move under …