Subcritical Transition to Turbulence in Shear Flows
Author | : |
Publisher | : |
Total Pages | : 100 |
Release | : 2014 |
ISBN-10 | : OCLC:931584651 |
ISBN-13 | : |
Rating | : 4/5 (51 Downloads) |
Book excerpt: The theme of this thesis is transition to turbulence in linearly stable shear flows. Laminar-turbulent intermittency and hysteresis are typical feature of these flows at transitional Reynolds numbers, characterizing a subcritical scenario. Subcritical transition is a dynamically rich phenomenon in nature and has been scrutinized for over a century. The critical Reynolds number for the transition and its physical mechanisms are fundamental problems in fluid dynamics and are still not fully understood. These questions are addressed in this thesis by performing direct numerical simulations of...