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Quantum turbulence involves the chaotic dynamics of many interacting quantum vortices. In highly excited bulk superfluid, many vortex lines interact with each other forming quantum turbulent states. By introducing tight confinement along one direction the Kelvin wave excitations can be strongly suppressed, favouring vortex alignment with the axis of tight confinement. Vortex dynamics enters a regime of effective 2D motion, equivalent to point vortices moving on a plane. In general, 2D quantum turbulence (2DQT) can exhibit complex phenomenology involving coupled vortices and sound in compressible superfluids. The quantum vortex dynamics can exhibit signatures of turbulence including a Kolmogorov −5/3 power law, a quantum manifestation of the inertial transport of energy to large scales observed in classical fluids, known as an inverse energy cascade.
References
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- ↑ Lebedev, V. V.; Turitsyn, K. S.; Vergeles, S. S. (November 20, 2007). "Dynamics of nearly spherical vesicles in an external flow". Physical Review Letters. 99 (21): 218101. arXiv: cond-mat/0702650 . Bibcode:2007PhRvL..99u8101L. doi:10.1103/PhysRevLett.99.218101. PMID 18233260. S2CID 17517230.
- 1 2 Roy, Subrata; Srinivasan, Pradeep (2000). "External Flow Analysis of a Truck for Drag Reduction". SAE Transactions. 109: 808–812. JSTOR 44650820.
- ↑ Speck, Thomas; Mehl, Jakob; Seifert, Udo (April 28, 2008). "Role of External Flow and Frame Invariance in Stochastic Thermodynamics". Physical Review Letters. 100 (17): 178302. arXiv: 0712.0232 . Bibcode:2008PhRvL.100q8302S. doi:10.1103/PhysRevLett.100.178302. PMID 18518344. S2CID 2743850.
- ↑ Chiu, Y-H.; Etheridge, D. W. (April 1, 2007). "External flow effects on the discharge coefficients of two types of ventilation opening". Journal of Wind Engineering and Industrial Aerodynamics. 95 (4): 225–252. doi:10.1016/j.jweia.2006.06.013.
- ↑ Chew, J. W.; Green, T.; Turner, A. B. (February 18, 2015). "Rim Sealing of Rotor-Stator Wheelspaces in the Presence of External Flow". Turbo Expo: Power for Land, Sea, and Air. American Society of Mechanical Engineers. doi:10.1115/94-GT-126. ISBN 978-0-7918-7883-5. S2CID 110218328.
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