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11:15
15 mins
Numerical investigation of localized exact solutions of the Navier-Stokes equations in pipe flow.
Vladimir Pimanov, Nikolay Nikitin
Session: Wall-bounded flows 1
Session starts: Tuesday 25 August, 10:30
Presentation starts: 11:15
Room: Room I
Vladimir Pimanov (Lomonosov Moscow State University)
Nikolay Nikitin (Lomonosov Moscow State University)
Abstract:
The edge state solution in pipe flow at Re=2200 is calculated numerically. The solution has the form of spatially localized puff-like structure drifting downstream. In the moving frame it is represented by a steady average flow and time-periodic pulsation flow. It is shown, that the Kelvin-Helmholtz instability mechanism is not valid for pulsation generation in the edge state flow.