Fluctuations and Instability in Sedimentation
نویسندگان
چکیده
منابع مشابه
assessing political stability and instability in central asia and caucasus; case study, azerbaijan and kyrgyzstan
منطقه ی آسیای مرکزی وقفقاز به عنوان منطقه ای تاریخی و به دلیل دارا بودن ذخایر عظیم هیدرو کربنی از اهمیت ویژه ای برخوردار است. کشورهای این منطقه از عوامل عمده ی بی ثباتی نظیر عوامل جغرافیایی، اقتصادی، امنیتی، اجتماعی و سیاسی رنج می برند. پس از فروپاشی اتحاد جماهیر شوروی کشورهای منطقه از نعمت استقلال ناخواسته ای برخوردار شدند که مشکلات فوق را برای آن ها چندین برابر می کرد. در این روند برخی از این...
15 صفحه اولFluctuations and correlations in modulation instability
Stochastically driven nonlinear processes are responsible for spontaneous pattern formation and instabilities in numerous natural and artificial systems, including well-known examples such as sand ripples, cloud formations, water waves, animal pigmentation and heart rhythms1–3. Technologically, a type of such self-amplification drives free-electron lasers4,5 and optical supercontinuum sources6,...
متن کاملA unifying theory for velocity fluctuations in sedimentation
This paper presents a theory for the velocity fluctuations in sedimentation that unifies all previous experimental results and numerical simulations. The central idea is that velocity fluctuations in experiments decrease below those of an independently-distributed uniform density sediment between side walls because of the development of a vertical stratification in the cell, owing to the broade...
متن کاملCritical Fluctuations in Cortical Models Near Instability
Computational studies often proceed from the premise that cortical dynamics operate in a linearly stable domain, where fluctuations dissipate quickly and show only short memory. Studies of human electroencephalography (EEG), however, have shown significant autocorrelation at time lags on the scale of minutes, indicating the need to consider regimes where non-linearities influence the dynamics. ...
متن کاملExternal fluctuations in a pattern-forming instability.
The effect of external fluctuations on the formation of spatial patterns is analyzed by means of a stochastic Swift-Hohenberg model with multiplicative space-correlated noise. Numerical simulations in two dimensions show a shift of the bifurcation point controlled by the intensity of the multiplicative noise. This shift takes place in the ordering direction ~i.e., produces patterns!, but its ma...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Annual Review of Fluid Mechanics
سال: 2011
ISSN: 0066-4189,1545-4479
DOI: 10.1146/annurev-fluid-122109-160736