On the development of a wake vortex in inviscid flow |
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Authors: | O. M. Belotserkovskii M. S. Belotserkovskaya V. V. Denisenko I. V. Eriklintsev S. A. Kozlov E. I. Oparina O. V. Troshkin S. V. Fortova |
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Affiliation: | 1. Institute for Computer-Aided Design, Russian Academy of Sciences, ul. Vtoraya Brestskaya 19/18, Moscow, 123056, Russia
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Abstract: | The evolution of an initial perturbation in an axisymmetric subsonic normal inviscid gas flow through a pipe is directly simulated. The basic (unperturbed) flow has a zero radial velocity component, while its axial velocity component (along the axis of symmetry) increases or decreases linearly with the radius. The perturbation is specified as a swirl (rotation about the axis) with a positive or negative velocity vanishing on the central axis and the lateral surface. Irrespective of its direction, the swirl gives rise to a steady-state vortex carried by the flow. It shape is spherical (contiguous to the rotation axis) or circular (sliding along the impermeable lateral surface). |
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