CFD-DEM modelling of gas-solid reacting flow (rCFD-DEM): from new approaches to industry applications
Fluidization
2023
Fluidization XVII
General Submissions
Applications Session 2: Circular Economy I - Waste
Monday, May 22, 2023 - 2:45pm to 3:00pm
In this talk, we introduce novel methods for both the calibration and validation of numerical simulations of fluidised- and spouted-bed systems, both of which can be easily generalised to other particulate, fluid or multiphase systems, and to arbitrary simulation techniques.
In part 1 of the talk we introduce Autonomous Characterisation and Calibration using Evolutionary Simulation (ACCES), an open-source, AI-based tool which uses evolutionary computation and metaprogramming to autonomously determine the correct calibration parameters for a given simulation based only on data readily available from widely-available powder characterisation tools.
in part 2, we introduce Positron Emission Particle Tracking (PEPT), a nuclear imaging technique which allows the fully-three-dimensional dynamics of diverse particulate and multiphase systems to be imaged with sub-millimetre spatial resolution and sub-millisecond temporal resolution, even deep within the interior of large, dense, optically opaque systems. We show how the detailed, three-dimensional fields extracted from PEPT data may be used to provide a uniquely rigorous validation of simulation methods such as CFD, DEM and MP-PIC.
We demonstrate the application of both methodologies using a series of case studies involving both laboratory and industrial systems, including spouted-bed coffee roasters and fluidised-bed-based pyrolysis reactors for the chemical recycling of plastic waste.