Rayleigh-Taylor Instability in a Phase Separating Mixture under a Concentration Gradient
نویسندگان
چکیده
In order to investigate the onset of flows induced by gravity during phase
منابع مشابه
An incompressible multi-phase SPH method
An incompressible multi-phase SPH method is proposed. In this method, a fractional time-step method is introduced to enforce both the zero-density-variation condition and the velocity-divergence-free condition at each full time step. To obtain sharp density and viscosity discontinuities in an incompressible multi-phase flow a new multi-phase projection formulation, in which the discretized grad...
متن کاملStudy on Multiphase Buoyancy-Drag Model of Mixing Induced by Rayleigh-Taylor Instability in Dusty Gases
The evolutions of the material interpenetration boundary induced by Rayleigh-Taylor instability were calculated under various acceleration histories using a buoyancy-drag model. It reveals that the development of mixing under constant acceleration is very different from that under variable acceleration. The calculation results were compared with detailed experimental data to prove the validatio...
متن کاملTwo-Phase Flow Analysis of Unstable Fluid Mixing in 1D Geometry
A two-phase ow model for an acceleration-driven compressible uid mixing layer is applied to an initially planar/cylindrical/spherical uid connguration. A conservative form of the one-dimensional compressible equations is derived under the assumption that the uid concentration is continuous. With a hyperbolic conservation law for the concentration gradient, the model supports traveling discontin...
متن کاملInvestigation of nanoparticles diameter on free convection of Aluminum Oxide-Water nanofluid by single phase and two phase models
In this research, effect of nanoparticles dimeter on free convection of aluminum oxide-water was investigated in a cavity by single phase and two phase models. The range of Rayleigh number is considered 105-107 in volume fractions of 0.01 to 0.03 for nanoparticles with various diameters (25, 33, 50 and 100 nm). Given that the two phase nature of nanofluids, necessity of modeling by this method ...
متن کاملOn Richtmyer–Meshkov instability in dilute gas-particle mixtures
Richtmyer–Meshkov instability RMI in gas-particle mixtures is investigated both numerically and analytically. The linear amplitude growth rate for a RMI in a two-phase mixture is derived by using a dusty gas formulation for small Stokes number St 1.0 , and it is shown that the problem can be characterized by mass loading and St. The model predictions are compared with numerical results under tw...
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