Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session X30: Magnetohydrodynamics
8:00 AM–10:36 AM,
Tuesday, November 21, 2023
Room: 154AB
Chair: Douglas Kelley, University of Rochester
Abstract: X30.00012 : The mechanisms of laminar-turbulent transition in the MHD pipe flow subject to a transverse magnetic field*
10:23 AM–10:36 AM
Presenter:
Yelyzaveta Velizhanina
(Universite libre de Bruxelles)
Authors:
Yelyzaveta Velizhanina
(Universite libre de Bruxelles)
Bernard C Knaepen
(Universite libre de Bruxelles)
Here we exploit global modal and non-modal stability analyses to study the two scenarios of transition numerically. This allows us to identify the most dangerous disturbances predicted by the two theories. The non-linear evolution and transitional flow dynamics of the MHD pipe flow subject to the optimal perturbation is then studied using direct numerical simulation.
*This work has been carried out within the framework of 1) the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 — EUROfusion), 2) the Belgian Fusion Association and has received funding from the FPS Economy, SMEs, Self-Employed and Energy. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission nor of the FPS Economy, SMEs, Self-Employed and Energy. Neither the European Union, the European Commission nor the FPS Economy, SMEs, Self- Employed and Energy can be held responsible for them.
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