Abstract
We study the superfluid flow around an obstacle and observe a transition to dissipation which is explained by the nucleation of quantized vortices. This transition between a potential flow state, dominated by sounds waves (phonons), toward a vortical state occurs at a well determined velocity threshold. We study the dependence of the critical velocity in different geometries in 2 or 3 spaces dimension. We also report a new mechanism of nucleation of a pair of vortices (vortex-antivortex) from the collision between (very short wavelength) sound waves.
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© 1993 Springer Science+Business Media Dordrecht
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Rica, S., Pomeau, Y. (1993). Critical Velocities and Nucleation of Vortices in a Model of Superflow. In: Tirapegui, E., Zeller, W. (eds) Instabilities and Nonequilibrium Structures IV. Mathematics and Its Applications, vol 267. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1906-1_36
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DOI: https://doi.org/10.1007/978-94-011-1906-1_36
Publisher Name: Springer, Dordrecht
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