Nonequilibrium Thermodynamics and the Optimal Path to Turbulence in Shear Flows

Monokrousos, AntoniosKTH,Stabilitet, Transition, Kontroll,Linné Flow Center, FLOW (author)

We determine the initial condition on the laminar-turbulent boundary closest to the laminar state using nonlinear optimization for plane Couette flow. Resorting to the general evolution criterion of nonequilibrium systems we optimize the route to the statistically steady turbulent state, i.e., the state characterized by the largest entropy production. This is the first time information from the fully turbulent state is included in the optimization procedure. We demonstrate that the optimal initial condition is localized in space for realistic flow domains.

Bottaro, Alessandro (author)
Brandt, LucaKTH,Mekanik,Linné Flow Center, FLOW(Swepub:kth)u15iawoo (author)
Di Vita, Andrea (author)
Henningson, Dan S.KTH,Stabilitet, Transition, Kontroll,Linné Flow Center, FLOW(Swepub:kth)u1xtilpr (author)
KTHStabilitet, Transition, Kontroll (creator_code:org_t)

By the author/editor: Monokrousos, Ant ...; Bottaro, Alessan ...; Brandt, Luca; Di Vita, Andrea; Henningson, Dan ...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Fluid Mechanics ...

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