Hydrodynamic Fingering Instability Induced by a Precipitation Reaction
نویسندگان
چکیده
منابع مشابه
Hydrodynamic instability induced by a precipitation reaction in a Hele - Shaw cell
Submitted for the DFD11 Meeting of The American Physical Society Hydrodynamic instability induced by a precipitation reaction in a Hele-Shaw cell YUKI ISHII, YUICHIRO NAGATSU, Nagoya Institute of Technology, 466-8555, Japan, ANNE DE WIT, Nonlinear Physical Chemistry Unit, CP 231, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium — We experimentally demonstrate hydrodynamic fingering d...
متن کاملHydrodynamic fingering instability of driven wetting films: hindrance by diffusion
Recent experimental and theoretical efforts have revealed the existence of a fingering instability at the moving front of thin liquid films forced to spread under gravitational, rotational or surface shear stresses, as for example by using the Marangoni effect. We describe how the presence of a precursor film in front of the spreading macroscopic film, whether it is by prewetting the substrate ...
متن کاملDiffusive fingering in a precipitation reaction driven by autocatalysis.
The interaction of an autocatalytic reaction with a fast precipitation reaction is shown to produce a permanent precipitate pattern where the major driving force is differential diffusion. The final structure emerges from the leading transient cellular front, the cusps of which evolve into precipitate free zones. The experimental observations are reproduced by a simple model calculation based o...
متن کاملA minimal model for a hydrodynamic fingering instability in microroller suspensions
Paul Chaikin Department of Physics, New York University, New York, NY 10003, USA. Abstract We derive a minimal continuum model to investigate the hydrodynamic mechanism behind the fingering instability recently discovered in a suspension of microrollers near a floor [Driscoll et al. Nature Physics, 2016]. Our model, consisting of two continuous lines of rotlets, exhibits a linear instability dr...
متن کاملFingering Instability in a Water-Sand Mixture
The temporal evolution of a water-sand interface driven by gravity is experimentally investigated. By means of a Fourier analysis of the evolving interface the growth rates are determined for the different modes appearing in the developing front. To model the observed behavior we apply the idea of the Rayleigh-Taylor instability for two stratified fluids. Carrying out a linear stability analysi...
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: Physical Review Letters
سال: 2014
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.113.024502