<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The purpose of this work is to ensuring the strength of main gas pipelines bends by studying the peculiarities of single-phase and multiphase flows movement through the internal cavity, the processes of erosion wear and the wall stress state. The problem of synergistic influence of gas-dynamic processes (uneven pressure distribution in the internal cavity), temperature difference and erosion wear on the stress state of the bends of main gas pipelines was solved by numerical simulation. Based on the results of simulation the processes of bends erosion wear, an algorithm for three-dimensional simulation of bend walls erosion defects was developed. The complex three-dimensional geometric shape of the erosion defects of the bend wall varied according to the rate of erosion wear process. This algorithm made it possible to determine the regularities for the influence of the bend erosion defects magnitude on bends stress state. It was established that considering the maximum depth of bend erosion defects 9.6 mm, 10.5 mm and 11.9 mm, the equivalent stresses in the deepest places of the erosion defect were greater than on the concave side of the bend and in straight sections of the pipeline.</p>
</abstract>

The purpose of this work is to ensuring the strength of main gas pipelines bends by studying the peculiarities of single-phase and multiphase flows movement through the internal cavity, the processes of erosion wear and the wall stress state. The problem of synergistic influence of gas-dynamic processes (uneven pressure distribution in the internal cavity), temperature difference and erosion wear on the stress state of the bends of main gas pipelines was solved by numerical simulation. Based on the results of simulation the processes of bends erosion wear, an algorithm for three-dimensional simulation of bend walls erosion defects was developed. The complex three-dimensional geometric shape of the erosion defects of the bend wall varied according to the rate of erosion wear process. This algorithm made it possible to determine the regularities for the influence of the bend erosion defects magnitude on bends stress state. It was established that considering the maximum depth of bend erosion defects 9.6 mm, 10.5 mm and 11.9 mm, the equivalent stresses in the deepest places of the erosion defect were greater than on the concave side of the bend and in straight sections of the pipeline.

Numerical Study on Erosion Wear and Strength of Main Gas Pipelines Bends

Department of Oil and Gas Pipelines and Storage Facilities

Institute of Petroleum Engineering, Ivano-Frankivsk National Technical University of Oil and Gas

Department of Energy Management and Technical Diagnostics, Institute of Architrcture, Construction and Power Engineering

Ivano-Frankivsk National Technical University of Oil and Gas

Strojnícky časopis - Journal of Mechanical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Numerical Study on Erosion Wear and Strength of Main Gas Pipelines Bends"}

The purpose of this work is to ensuring the strength of main gas pipelines bends by studying the peculiarities of single-phase and multiphase flows movement...

Numerical Study on Erosion Wear and Strength of Main Gas Pipelines Bends

Published Online: Oct 08, 2021

Page range: 27 - 40

DOI: https://doi.org/10.2478/scjme-2021-0003

Keywords
Multiphase flow, Bend, Gas pipeline, Gas - dynamic process, Erosion wear, Stress state

© 2021 Doroshenko Yaroslav et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Numerical Study on Erosion Wear and Strength of Main Gas Pipelines Bends

Published Online: Oct 08, 2021

Page range: 27 - 40

DOI: https://doi.org/10.2478/scjme-2021-0003

KeywordsMultiphase flow, Bend, Gas pipeline, Gas - dynamic process, Erosion wear, Stress state

© 2021 Doroshenko Yaroslav et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Multiphase flow, Bend, Gas pipeline, Gas - dynamic process, Erosion wear, Stress state