STUDY OF THE INFLUENCE OF THE GEOMETRIC FORM OF PIGS ON THE EFFICIENCY OF CLEANING PIPELINES
DOI:
https://doi.org/10.34185/1991-7848.itmm.2024.01.068Keywords:
pipeline, cleaning, pigs, efficiency, passage, numerical simulation.Abstract
The effect of the geometric shape of the pigs on their passage and pipeline cleaning efficiency was investigated by numerical modeling and experimentally. For this, a 3D geometric model was built and experimental samples with a convex front and a concave back part were made from silicone compound. The properties of the pigs material are described by the Mooney-Rivlin deformation potential energy model. The simulation results are visualized by constructing three-dimensional colored fields of equivalent Mises stresses on the contours of the pigs for different values of the friction coefficient between its side surface and the inner wall of the pipeline. It was found that making the rear part of the pigs concave leads to a significant increase in the contact forces between the pigs and the inner wall of the pipe, which has a significant impact on its passage and the efficiency of cleaning the internal cavity of the pipeline. Moreover, with an increase in the coefficient of friction, the equivalent stresses near the rear end of the pigs increase, and therefore the contact forces increase and the flow through the pigs decreases.
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