Direct numerical simulations of multi-mode immiscible Rayleigh-Taylor instability with high Reynolds numbers

H Liang, X Hu, X Huang, J Xu - Physics of Fluids, 2019 - pubs.aip.org
In this paper, we conduct the high-resolution direct numerical simulations of multimode
immiscible Rayleigh-Taylor instability (RTI) with a low Atwood number (A t= 0.1) using an …

Effects of stabilizing and destabilizing thermal gradients on reversed shear-stratified flows: Combined Kelvin–Helmholtz Rayleigh–Taylor instability

A Sengupta, B Joshi - Physics of Fluids, 2023 - pubs.aip.org
Numerical investigation of the coupled Kelvin–Helmholtz Rayleigh–Taylor instability
(KHRTI) is presented here by solving the compressible Navier–Stokes equations for two air …

Variable energy flux in turbulence

MK Verma - Journal of Physics A: Mathematical and Theoretical, 2021 - iopscience.iop.org
In three-dimensional hydrodynamic turbulence forced at large length scales, a constant
energy flux Π u flows from large scales to intermediate scales, and then to small scales. It is …

Progress on understanding Rayleigh–Taylor flow and mixing using synergy between simulation, modeling, and experiment

O Schilling - Journal of Fluids Engineering, 2020 - asmedigitalcollection.asme.org
Simultaneous advances in numerical methods and computing, theoretical techniques, and
experimental diagnostics have all led independently to better understanding of Rayleigh …

Turbulent mixing in the vertical magnetic Rayleigh–Taylor instability

A Briard, BJ Gréa, F Nguyen - Journal of Fluid Mechanics, 2024 - cambridge.org
The presence of a mean magnetic field aligned with the direction of the acceleration greatly
modifies the development of the Rayleigh–Taylor instability (RTI). High resolution direct …

Revisiting the late-time growth of single-mode Rayleigh–Taylor instability and the role of vorticity

X Bian, H Aluie, D Zhao, H Zhang, D Livescu - Physica D: Nonlinear …, 2020 - Elsevier
Growth of the single-fluid single-mode Rayleigh–Taylor instability (RTI) is revisited in 2D and
3D using fully compressible high-resolution simulations. We conduct a systematic analysis …

[HTML][HTML] Direct numerical simulations of incompressible Rayleigh–Taylor instabilities at low and medium Atwood numbers

A Hamzehloo, P Bartholomew, S Laizet - Physics of Fluids, 2021 - pubs.aip.org
Direct numerical simulations of two-dimensional (2D) and three-dimensional (3D), single-
mode and multi-mode, incompressible immiscible Rayleigh–Taylor (RT) instabilities are …

Unraveling the secrets of turbulence in a fluid puff

A Mazzino, ME Rosti - Physical Review Letters, 2021 - APS
Turbulent puffs are ubiquitous in everyday life phenomena. Understanding their dynamics is
important in a variety of situations ranging from industrial processes to pure and applied …

Dynamics of unstably stratified free shear flows: an experimental investigation of coupled Kelvin–Helmholtz and Rayleigh–Taylor instability

B Akula, P Suchandra, M Mikhaeil… - Journal of Fluid …, 2017 - cambridge.org
The dynamics of the coupled Kelvin–Helmholtz (KH) and Rayleigh–Taylor (RT) instability
(referred to as KHRT instability or KHRTI) is studied using statistically steady experiments …

Polymers in fluid flows

R Benzi, ESC Ching - Annual Review of Condensed Matter …, 2018 - annualreviews.org
The interaction of flexible polymers with fluid flows leads to a number of intriguing
phenomena observed in laboratory experiments, namely drag reduction, elastic turbulence …