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RESEARCH PRODUCT
Inhomogeneous vortex tangles in counterflow superfluid turbulence: flow in convergent channels
Lidia SalutoMaria Stella Mongiovìsubject
T57-57.97Applied mathematics. Quantitative methodsTurbulenceApplied MathematicsQuantum turbulenceQuantum turbulence quantized vortices heat transfer inhomogeneous vortex tangle vortex diffusion.Quantized vorticesquantum turbulencevortex diffusion01 natural sciencesIndustrial and Manufacturing Engineering010305 fluids & plasmasVortexSuperfluidityClassical mechanicsCondensed Matter::Superconductivity0103 physical sciencesHeat transferheat transferinhomogeneous vortex tangle010306 general physicsSettore MAT/07 - Fisica Matematicaquantized vorticesdescription
Abstract We investigate the evolution equation for the average vortex length per unit volume L of superfluid turbulence in inhomogeneous flows. Inhomogeneities in line density L andincounterflowvelocity V may contribute to vortex diffusion, vortex formation and vortex destruction. We explore two different families of contributions: those arising from asecondorder expansionofthe Vinenequationitself, andthose whichare notrelated to the original Vinen equation but must be stated by adding to it second-order terms obtained from dimensional analysis or other physical arguments.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-06-01 | Communications in Applied and Industrial Mathematics |