Nonequilibrium Thermodynamics and the Optimal Path to Turbulence in Shear Flows
2011 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 106, no 13, 134502- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2011. Vol. 106, no 13, 134502- p.
maximum-entropy production, pipe-flow, transition, dissipation, growth, waves
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-33795DOI: 10.1103/PhysRevLett.106.134502ISI: 000288901200012ScopusID: 2-s2.0-79960631982OAI: oai:DiVA.org:kth-33795DiVA: diva2:417763
FunderSwedish e‐Science Research Center