Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session A17: Convection and Buoyancy-Driven Flows: General I
8:00 AM–9:57 AM,
Sunday, November 19, 2023
Room: 145B
Chair: Harish Ganesh, University of Michigan
Abstract: A17.00007 : Multi-layer Rayleigh-Taylor instability in naturally occurring density-stratified mixing layers*
9:18 AM–9:31 AM
Presenter:
Hugo N Ulloa
(University of Pennsylvania)
Authors:
Hugo N Ulloa
(University of Pennsylvania)
Aditi Sengupta
(Indian Institute of Technology Dhanbad)
Bhavna Joshi
(PhD student, Dept of Mech. Engg, IIT Dhanbad, India)
The present work presents an overview of multilayer RTI, focusing on its fundamental characteristics and underlying mechanisms. The distinct stages of multilayer RTI, encompassing initial growth of perturbations, formation of finger-like structures, and eventual transition to a fully turbulent regime are explored by invoking a compressible enstrophy transport equation.
*The authors are grateful to National Supercomputing Mission (NSM), Government of India, Grant No. DST/NSM/R&D_Exascale/Extension/2023/02, for sponsoring the project and providing full financial support for the problem solved here as part of an NSM initiative.
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