Bulletin of the American Physical Society
75th Annual Meeting of the Division of Fluid Dynamics
Volume 67, Number 19
Sunday–Tuesday, November 20–22, 2022; Indiana Convention Center, Indianapolis, Indiana.
Session Z16: Interface Modeling II
12:50 PM–2:47 PM,
Tuesday, November 22, 2022
Room: 143
Chair: Suhas Jain, Stanford University; Ali Mani, Standard University
Abstract: Z16.00009 : Modeling of subgrid-scale interfacial area for turbulent two-phase flows*
2:34 PM–2:47 PM
Presenter:
Suhas S Jain
(Center for Turbulence Research, Stanford University)
Authors:
Suhas S Jain
(Center for Turbulence Research, Stanford University)
Ahmed Elnahhas
(Center for Turbulence Research, Stanford University)
Interfacial area has been previously modeled in the framework of Reynolds-averaged Navier Stokes equations (RANS) equations (Kocamustafaogullari and Ishii, IJHMT, 1995) using phenomenological approaches. However, in the context of a large-eddy simulation (LES) of two-phase flows, where an interface-capturing/tracking method is used for resolving interfaces, coarse LES grids will underpredict the interfacial area. The present work uses direct numerical simulations and LES calculations to quantify and model this missing subgrid interfacial area in the context of LES of turbulent two-phase flows. This study has applications in engineering and natural processes, such as atomization and oceanic gas transfer.
*SSJ acknowledges support from Boeing Co. and AE acknowledges support from NASA Grant No. 80NSSC20M0201
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