Rate of chaotic mixing in localized flows
نویسندگان
چکیده
منابع مشابه
Persistent patterns in deterministic mixing flows
– We present a theoretical approach to the description of persistent passive scalar patterns observed in recent experiments with non-turbulent time-periodic two-dimensional fluid flows. The behaviour of the passive scalar is described in terms of eigenmodes of the evolution operator which coincides with the Frobenius-Perron operator for the corresponding Lagrangian dynamics with small noise; th...
متن کاملChaotic Mixing in Galactic Dynamics
This talk summarises what is currently understood about the phenomenon that has come to be known as chaotic mixing. The first part presents a concise statement as to what chaotic mixing actually is, and then explains why it should be important in galactic dynamics. The second discusses in detail what is currently known, describing the manifestations of chaotic mixing both for flows in time-inde...
متن کاملEnhancing Efficiency of Mixing in Chaotic Flows
We propose a mechanism by which the efficiency of mixing in chaotic flows can be enhanced. Our mechanism consists of introducing small changes in the system parameters in regions of phase space where the local Lyapunov exponent falls substantially below its average value. We have applied our mechanism to several typical chaotic maps and flows including a system of chemical reactions. We find th...
متن کاملLaminar mixing of high-viscous fluids by a cylindrical chaotic mixer
Laminar mixing of glycerin in a chaotic mixer is carried by means of the blob deformation method. The mixer was a cylindrical vessel with two rotational blades which move along two different circular paths with a stepwise motion protocol. The flow visualization was performed by marking of the free surface of the flow with a tracer. The effects of controlling parameters such as rotational speed ...
متن کاملChaotic mixing in thermocapillary-driven microdroplets
Liquid microdroplets represent a convenient system for studies of mixing by chaotic advection in discrete microscopic volumes. The mixing properties of the flows in microdroplets are governed by their symmetries, which give rise to invariant surfaces serving as barriers to transport. Thorough mixing via chaotic advection requires destruction of all such invariant surfaces. To illustrate this id...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2017