Numerical Study on Acoustic Resonance Excitation in Closed Side Branch Pipeline Conveying Natural Gas
Joint Authors
Zhang, Hong
Jiang, Liuyi
Duan, Qingquan
Zhang, Yulong
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-19, 19 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-23
Country of Publication
Egypt
No. of Pages
19
Main Subjects
Abstract EN
Flow-induced acoustic resonance in the closed side branch of a natural gas pipeline can cause intensive vibration which threatens the safe operation of the pipeline.
Accurately modeling this excitation process is necessary for a workable understanding of the genetic mechanism to resolve this problem.
A realizable k-ε Delayed Detached Eddy Simulation (DDES) model was conducted in this study to numerically simulate the acoustic resonance problem.
The model is shown to accurately capture the acoustic resonance phenomenon and self-excited vibration characteristics with low calculation cost.
The pressure pulsation component of the acoustic resonance frequency is gradually amplified and transformed into a narrowband dominant frequency in the process of acoustic resonance excitation, forming a so-called “frequency lock-in phenomenon.” The gas is pressed into and out of the branch in sinusoidal mode during excitation.
The first-order frequency, single vortex moves at the branch inlet following the same pattern.
A quarter wavelength steady standing wave forms in the branch.
The mechanism and characteristics presented in this paper may provide guidelines for developing new excitation suppression methods.
American Psychological Association (APA)
Jiang, Liuyi& Zhang, Hong& Duan, Qingquan& Zhang, Yulong. 2020. Numerical Study on Acoustic Resonance Excitation in Closed Side Branch Pipeline Conveying Natural Gas. Shock and Vibration،Vol. 2020, no. 2020, pp.1-19.
https://search.emarefa.net/detail/BIM-1212977
Modern Language Association (MLA)
Jiang, Liuyi…[et al.]. Numerical Study on Acoustic Resonance Excitation in Closed Side Branch Pipeline Conveying Natural Gas. Shock and Vibration No. 2020 (2020), pp.1-19.
https://search.emarefa.net/detail/BIM-1212977
American Medical Association (AMA)
Jiang, Liuyi& Zhang, Hong& Duan, Qingquan& Zhang, Yulong. Numerical Study on Acoustic Resonance Excitation in Closed Side Branch Pipeline Conveying Natural Gas. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-19.
https://search.emarefa.net/detail/BIM-1212977
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1212977