| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Transient Growth of Perturbation Energy in the Taylor–Couette Problem with Radial Flow |
| CHEN Cheng, GUO Zhi-Wei, WANG Bo-Fu, SUN De-Jun**
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Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027
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| Cite this article: |
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CHEN Cheng, GUO Zhi-Wei, WANG Bo-Fu et al 2011 Chin. Phys. Lett. 28 054703 |
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Abstract Transient growth of perturbation energy in the Taylor–Couette problem with radial flow is investigated. The effects of radial flow on transient growth and structure of the optimal perturbation are mainly considered. For the wide gap case, strong radial flow, either inward or outward, shifts the peak of the amplitude of optimal perturbation towards the outer cylinder and the lift-up mechanism cannot be observed. However, for the narrow gap case, the optimal perturbation is almost unaffected by the radial flow and the lift-up mechanism still exists.
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| Keywords:
47.20.Qr
47.32.Ef
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Received: 22 December 2010
Published: 26 April 2011
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| PACS: |
47.20.Qr
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(Centrifugal instabilities (e.g., Taylor-Couette flow))
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47.32.Ef
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(Rotating and swirling flows)
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