Bifurcations and symmetry breaking in the wake of axisymmetric bodies

نویسندگان

  • David Fabre
  • Franck Auguste
  • Jacques Magnaudet
چکیده

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Bifurcations in systems with Z2 spatio-temporal and O(2) spatial symmetry

This work analyzes the O(2) symmetry breaking bifurcations in systems with anZ2×O(2) symmetry group—whereZ2 and O(2) are, respectively, spatio-temporal and spatial symmetries—that are responsible for the transitions from two-dimensional to three-dimensional hydrodynamic states. This symmetry group describes, for example, two-dimensional time-periodic flows past bodies which have reflection symm...

متن کامل

Stochastic modelling and feedback control of bistability in a turbulent bluff body wake

A specific feature of three-dimensional bluff body wakes, flow bistability, is a subject of particular recent interest. This feature consists of a random flipping of the wake between two asymmetric configurations and is believed to contribute to the pressure drag of many bluff bodies. In this study we apply the modelling approach recently suggested for axisymmetric bodies by Rigas et al. (J. Fl...

متن کامل

Instability of plumes driven by localized heating

Plumes due to localized buoyancy sources are of wide interest owing to their prevalence in many situations. This study investigates the transition from laminar to turbulent dynamics. Several experiments have reported that this transition is sensitive to external perturbations. As such, a well-controlled set-up has been chosen for our numerical study, consisting of a localized heat source at the...

متن کامل

The Shape of Charged Drops over a Solid Surface and Symmetry-Breaking Instabilities

We study the static shape of charged drops of a conducting fluid placed over a solid substrate, surrounded by a gas, and in absence of gravitational forces. The question can be formulated as a variational problem where a certain energy involving the areas of the solid-liquid interface and of the liquid-gas interface, as well as the electric capacity of the drop, has to be minimized. As a functi...

متن کامل

Transitions to chaos in the wake of an axisymmetric bluff body

This letter aims at understanding the dynamical process that leads to the onset of chaos in the flow past a blunt-based axisymmetric bluff body. On the basis of direct numerical simulations, conducted for Reynolds numbers ranging from 100 to 900, we show that the flow undergoes multiple transitions, successively giving rise to the SS, RSPa, RSPb, RSPc and RSB wake states. In particular, the RSP...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2017