| EPSRC Reference: |
GR/L14084/01 |
| Title: |
ACTIVE CONTROL OF BOUNDARY LAYER INSTABILITIES BY MEMS |
| Principal Investigator: |
Gaster, Professor M |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Sch of Electronic Eng & Computer Science |
| Organisation: |
Queen Mary University of London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1996 |
Ends: |
30 September 1999 |
Value (£): |
157,437
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| EPSRC Research Topic Classifications: |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
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Summary on Grant Application Form |
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The object of the research programme is to delay transition in boundary layers by controlling the instabilities that grow and develop into turbulence. This will be achieved by detecting the on-coming waves and injecting a suitable cancelling disturbance into the flow. The ability of micro-mechanical sensors and actuators mounted on the surface of a smooth flat plate to measure and drive flow perturbations will be assessed. Sensors, most probably taking the form of surface hot-films, will be used to measure the fluctuating skin friction arising under different wave instabilities driven by an upstream microphone. The structure of the disturbances generated by small actuators on the boundary moving normal to the surface will be measured by traversing hot-wire probes and the results compared with predictions based on a linear theory. A feed-back control scheme will be devised to cancel locally the dominant waves expected. The effectiveness of the control will be tested experimentally with periodic and random wavetrains generated upstream.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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