Vortex stretching and reconnection in a compressible fluid

B. K. Shivamoggi ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 49, issue 4, 483-490

Abstract: Vortex stretching in a compressible fluid is considered. Two-dimensional (2D) and axisymmetric cases are considered separately. The flows associated with the vortices are perpendicular to the plane of the uniform straining flows. Externally-imposed density build-up near the axis leads to enhanced compactness of the vortices — “dressed" vortices (in analogy to “dressed" charged particles in a dielectric system). The compressible vortex flow solutions in the 2D as well as axisymmetric cases identify a length scale relevant for the compressible case which leads to the Kadomtsev-Petviashvili spectrum for compressible turbulence. Vortex reconnection process in a compressible fluid is shown to be possible even in the inviscid case — compressibility leads to defreezing of vortex lines in the fluid. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 47.32.-y Vortex dynamics; rotating fluids, (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00086-0

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