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Mathematical Model of Air Pocket Evolution during Water Filling a Long-Slope Pipeline and Its Application to Air Removal Prediction
Joint Authors
Deng, Tao
Cui, Yanyu
Chen, Wenhui
Chen, Yuanyuan
Gong, Jing
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-07-27
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
During water filling a long-slope pipeline, air pocket is very likely to be entrapped at peak point.
In order to track air movement and predict air removal conditions, a mathematical model of air pocket evolution, including its formation, compression, and entrainment, is proposed in this paper.
The simulation results were compared with the engineering field data and the two are basically consistent.
Furthermore, the two most important factors which play a great role in the removal of air pocket, i.e., the terrain category and the inlet flow rate, are analyzed in detail.
It is concluded that the removal conditions reach three outcomes: air pocket compressed and partly removed, compressed and completely removed, and compressed without any removal.
In this paper, the terrain which leads to the last outcome is called the “Dangerous Terrain.” And for the “Dangerous Terrain,” it is of great importance that the inlet flow rate should be strictly confined within a certain level.
While for the other two categories of terrains, an increased flow rate is in any respect beneficial to the removal of air pocket.
American Psychological Association (APA)
Chen, Yuanyuan& Cui, Yanyu& Chen, Wenhui& Deng, Tao& Gong, Jing. 2020. Mathematical Model of Air Pocket Evolution during Water Filling a Long-Slope Pipeline and Its Application to Air Removal Prediction. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1194238
Modern Language Association (MLA)
Chen, Yuanyuan…[et al.]. Mathematical Model of Air Pocket Evolution during Water Filling a Long-Slope Pipeline and Its Application to Air Removal Prediction. Mathematical Problems in Engineering No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1194238
American Medical Association (AMA)
Chen, Yuanyuan& Cui, Yanyu& Chen, Wenhui& Deng, Tao& Gong, Jing. Mathematical Model of Air Pocket Evolution during Water Filling a Long-Slope Pipeline and Its Application to Air Removal Prediction. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1194238
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1194238