Erosion in Stairmand cyclone by heavy spherical particles: Numerical modelling with experimental validation

• Type: Article in International Scientific Journal
• Date: 2025

Authors

Pacheco, P (Author) Other; Alves, MA (Author) FEUP; Campos, JBLM (Author) FEUP; Paiva, J (Author) Other

Journal

Title: Powder Technology

Vol. 453

ISSN: 0032-5910

Publisher: Elsevier

Indexing

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Other information

Authenticus ID: P-017-Q6Q

DOI: 10.1016/j.powtec.2024.120565

Abstract (EN): This research combines experimental measurement and numerical modelling in an effort to investigate the erosion of a Stairmand cyclone fed with spherical erodent (high-carbon steel shot, average particle diameter = 275 mu m). During the experiments, the cyclone's wall thickness was periodically monitored along 42 positions forming a vertical line, by ultrasonic thickness gauging. This data was used to estimate the erosion flux along this axial profile, providing the magnitude and distribution of erosion across the height of the cyclone. The most eroded region, identified as the inlet target zone, was analysed with SEM following the experiments, revealing the predominance of the platelet formation and removal erosion mechanism. Numerical modelling was based on CFD-DEM simulation employing the Finnie and Archard models, back-calibrated through comparison to experimental data. Key findings emphasize the efficacy of the Archard model over the Finnie model, revealing resilience to mesh resolution variations. This further suggests that the Archard model may be better suited for reproducing the erosion magnitude and distribution in cases where the platelet formation and removal mechanism predominates over ploughing and microcutting.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12