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Erschienen in:
2008 | OriginalPaper | Buchkapitel
Numerical Investigation of a Micro-Valve Pulsed-Jet Actuator
verfasst von : Karen L. Kudar, Peter W. Carpenter
Erschienen in: IUTAM Symposium on Flow Control and MEMS
Verlag: Springer Netherlands
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A micro-valve pulsed-jet vortex-generator driven by piezoelectric actuation was successfully modelled numerically to determine the feasibility and response characteristics of such a design. This includes: modelling the dynamic motion of a unimorph cantilever and the fluid-structure interaction occuring between the unimorph and the fluid flowing over such a structure; the unsteady developing channel flow that would occur through the outlet orifice was also modelled. The response time of the actuator was found to be governed by the micro-valve opening rather than the time taken to establish the jet. However, the resistance of the pulsed-jet actuator was shown to be governed by the outlet orifice.