Alshahed, Osamh Sabri Mohammed Atia, Kaur, Baldeep ORCID: 0000-0002-1762-3058 and Bradley, Michael (2023) Application of chaos analysis to electrostatic measurements of horizontal gas-solid flow in pneumatic conveying of plastic pellets. In: ICBMH2023 - The 14th International Conference on Bulk Materials Storage, Handling and Transportation, 11th - 13th July 2023, Wollongong, New South Wales, Australia. (Unpublished)

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Abstract

Chaotic invariant measures have been used to characterise the instabilities of fully developed gas-solid flow patterns in horizontal pneumatic conveying of plastic pellets. These measures were applied to phase spaces (attractors) reconstructed from bottom arc-shaped electrostatic signals to characterise the behaviour of flow patterns: stratified flow, pulsating flow, moving dunes and blowing dunes. The flow patterns were identified using high-speed video imaging sight section of a pipeline and classified at several operating conditions in a flow pattern map and state diagram. It is found that optimal operating conditions at the minimum conveying air velocity in the state diagram are between moving dunes and blowing dunes. Chaotic features of electrostatic phase spaces are characterised using statistical measures capable of staying invariant at specific operating conditions, including Lyapunov exponent, approximate entropy and correlation dimension. The correlation between the chaotic invariant measures with the operating conditions is analysed through state diagrams, indicating that the fluctuations of electrostatic signals can classify the flow patterns at different solid mass flow rates.

Item Type:	Conference or Conference Paper (Paper)
Uncontrolled Keywords:	gas-solid flow; pneumatic conveying; chaos analysis; recurrence plot; recurrence quantification analysis
Subjects:	Q Science > Q Science (General) T Technology > T Technology (General)
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > School of Engineering (ENG) Faculty of Engineering & Science > Wolfson Centre for Bulk Solids Handling Technology
Last Modified:	23 Nov 2023 16:07
URI:	http://gala.gre.ac.uk/id/eprint/43668

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