Empirical Shape-Based Estimation of Settling Microplastic Particles Drag Coefficient

Microplastics (MP) are found in nature in various forms. The transport and settling process of MP particles in water streams is highly influenced by particle size and shape. In order to investigate the impact of particle shape, an experimental analysis of settling behavior of flat square particles a...

Full description

Saved in:
Bibliographic Details
Published in:Journal of marine science and engineering 2023-11, Vol.11 (11), p.2166
Main Authors: Holjević, Toni, Družeta, Siniša, Grbčić, Luka, Alvir, Marta
Format: Article
Language:English
Subjects:
Cubes
Drag coefficient
Drag coefficients
Empirical analysis
Experiments
Fluid flow
Illustrations
Microplastics
Particle shape
Reynolds number
Settlement analysis
Settling
Settling behavior
Settling behaviour
Shape
shape parameterization
Three dimensional flow
Tracking
Velocity
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Microplastics (MP) are found in nature in various forms. The transport and settling process of MP particles in water streams is highly influenced by particle size and shape. In order to investigate the impact of particle shape, an experimental analysis of settling behavior of flat square particles and 3D cubic particles in flowing water was conducted. The analysis is based on tracking the settling trajectories of particles of various size and using this information for calculating the drag coefficient cd in relation to the Reynolds number Re in the range of 80 to 280 for cubes and 50 to 110 for flat particles. The results were correlated with two shape parameters, sphericity ϕ and a newly proposed shape descriptor dimensionality δ. The final output is a model for particle shape-based cd estimation, mainly serving as an illustration of the potential of the proposed methodology.
ISSN:2077-1312
2077-1312
DOI:10.3390/jmse11112166