Stability of lobed Taylor-Couette flows by numerical simulations

Abstract eng:
The stability analysis for the three-dimensional Taylor-Couette flow with triangular lobed inner cylinder is considered. The numerical simulations using a finite volume solver are carried out to characterize the transition to the two first bifurcations: the Taylor Vortex Flow (TVF) and Wavy Vortex Flow (WVF) regimes. The critical parameters such as the Reynolds number and wave number signaling the onset of Taylor vortices are determined. It is found that a destabilization of the Taylor vortices results from the application of a non-constant gap width along the radial direction and the vortical structures are more pronounced compared to the classical system.

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