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 T36: Particle-Laden Flows: Clustering and Flow Instabilities
4:10 PM–6:46 PM,
Monday, November 21, 2022
Room: 244
Chair: Yuan-Nan Young, New Jersey Inst of Tech
Abstract: T36.00011 : Scale-dependent divergence of inertial particle velocity in isotropic turbulence*
6:20 PM–6:33 PM
Presenter:
Keigo Matsuda
(Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan)
Authors:
Keigo Matsuda
(Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan)
Thibault OUJIA
(Institut de Mathématiques de Marseille, Aix-Marseille Université, CNRS, Marseille, France)
Kai Schneider
(Institut de Mathématiques de Marseille, Aix-Marseille Université, CNRS, Marseille, France)
Jacob R West
(Department of Mechanical Engineering, Stanford University, CA, USA)
Suhas S Jain
(Center for Turbulence Research, Stanford University, CA, USA)
Kazuki Maeda
(Center for Turbulence Research, Stanford University, CA, USA)
The inertial particle distribution data are obtained from the direct numerical simulation of particle-laden homogeneous isotropic turbulence (Matsuda et al., 2021). The Lagrangian particle motion is modeled based on the Stokes drag. The particle velocity divergence is calculated based on the temporal rate of change in volumes configured by a tessellation technique (Oujia et al., J. Fluid Mech., 2020). The scale-dependence analysis based on a multi-resolution technique is applied to the velocity divergence data on unstructured discrete particle positions, and the results from this analysis will be discussed.
*This research was performed at the 2022 Stanford CTR Summer Program. K. Matsuda acknowledges partial financial support from JSPS KAKENHI Grant Number JP20K04298. T. Oujia and K. Schneider acknowledge partial funding from the Agence Nationale de la Recherche (ANR), grant ANR-20-CE46-0010-01. Centre de Calcul Intensif d'Aix-Marseille is acknowledged for granting access to its high performance computing resources.
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