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The University of Western Ontario |
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Abstract: Accidental introduction of a small disturbance into an unstable flow leads to a large change in the form of the motion, e.g., laminar-turbulent transition. We wish to explore this phenomenon in the design of flow control strategies. We wish to modulate the flow using a small input of external energy in such a way that the flow evolves through a natural instability process to a new, more desirable form. The proposed control strategy will be illustrated in the context of the use of distributed surface roughness for flow re-arrangements. |
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