Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session A40: Reacting Flows: Turbulent Combustion I
8:00 AM–9:57 AM,
Sunday, November 19, 2023
Room: 204C
Chair: Martin Rieth, Sandia National Laboratories
Abstract: A40.00002 : Analysis of heat-up, devolatilization, and ignition of coal particles using point-particle DNS
8:13 AM–8:26 AM
Presenter:
Heinrich H Heinzer
(Institute of Fluid Dynamics, ETH Zürich)
Authors:
Heinrich H Heinzer
(Institute of Fluid Dynamics, ETH Zürich)
Daniel W Meyer
(ETH Zurich)
Patrick Jenny
(ETH Zurich)
We present an examination of coal particles that cluster in reactive turbulence using point-particle DNS. Mimicking typical burning conditions, the mass loadings are about 0.1, Stokes numbers are about 1, and the Taylor-scale Reynolds number is about 50. In a precursor simulation, particles are randomly seeded in a turbulent base flow to obtain statistically homogeneous and isotropic initial conditions. The particles are heated up by the hot gases and devolatilize, followed by volatile combustion in the gas phase. Simulation results are assessed in terms of instantaneous contour plots, spatially averaged statistics, and joint probability distributions of relevant combustion quantities.
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