期刊
PHYSICAL REVIEW FLUIDS
卷 2, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevFluids.2.044701
关键词
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资金
- Royal Society
- Centre National de la Recherche Scientifique through the International Exchanges Cost Share Scheme [IE150527]
- EPSRC [EP/P023770/1] Funding Source: UKRI
Insight into vortex reconnections in superfluids is presented, making use of analytical results and numerical simulations of the Gross-Pitaevskii model. Universal aspects of the reconnection process are investigated by considering different initial vortex configurations and making use of a recently developed tracking algorithm to reconstruct the vortex filaments. We show that during a reconnection event the vortex lines approach and separate always according to the time scaling delta similar to t(1/2) with prefactors that depend on the vortex configuration. We also investigate the behavior of curvature and torsion close to the reconnection point, demonstrating analytically that the curvature can exhibit a self-similar behavior that might be broken by the development of shocklike structures in the torsion.
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