72th Annual Meeting of the APS Division of Fluid Dynamics (November 23, 2019 — November 26, 2019)

P0045: Direct particle-fluid simulation on dynamic meshes

Authors
  • Lennart Schneiders, California Institute of Technology; Institute of Aerodynamics of RWTH Aachen University
  • Konstantin Fröhlich, Institute of Aerodynamics of RWTH Aachen University
  • Matthias Meinke, Institute of Aerodynamics of RWTH Aachen University; JARA Center for Simulation and Data Science
  • Wolfgang Schröder, Institute of Aerodynamics of RWTH Aachen University; JARA Center for Simulation and Data Science
DOI: https://doi.org/10.1103/APS.DFD.2019.GFM.P0045

The modulation of decaying isotropic turbulence by non-spherical particles of Kolmogorov-scale size is investigated via direct particle-fluid simulations. To enable these computationally demanding computations, a Cartesian cut-cell method with dynamic mesh refinement and dynamic load balancing is applied to explicitly resolve the stresses acting on the fluid-particle interfaces. Up to 60000 ellipsoids are fully resolved, requiring O(10^10) mesh points.

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