DEM (meso-)particle property calibration with powder rheometry and other flow characterization techniques

Assem Zharbossyn

Host Institutions

University of Salerno [ 24 months ]
University of Twente [ 12 months ]


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Project Description

This predominantly experimental project aims to determine a protocol to calibrate parameters for DEM models using both primary and (coarser) meso-particles, with a focus on mono- and bi-component powders (e.g., powders with flow enhancers).

Specific objectives are:
  1. Conduct powder rheometer tests to selectively explore the relevance of different material and particle properties; the strategy will be to minimize the number of parameters that have to be optimized in each condition to match the model with the experiments;
  2. Perform sensitivity analysis for model parameters in mono- and bi-component powders at different rotational regimes;
  3. Extend material characterization experiments to include uniaxial compaction, shear testing at high temperature or humidity and vibration;
  4. Up-scaled DEM modelling (meso-particles) of the experiments to establish parameter sensitivity and develop calibration protocols.
Expected Results:
  1. Defined protocols to calibrate DEM parameters;
  2. Tailored calibration procedure according to specific composition of the powder (mono or bi-component);
  3. Tailored calibration procedure to relate the model chosen to flow regimes and devices.

Research Output