Study on Hydrodynamic Coefficients of a Submarine Piggyback Pipeline under the Action of Waves and Current

In this study, physical model tests are used to investigate the effects of a varying number of wave and current parameters, the gap ratios between the pipeline and seabed, the spacing ratios between the two pipelines and the diameter ratios on the hydrodynamic coefficients of the large, small pipeli...

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Bibliographic Details
Published inJournal of marine science and engineering Vol. 9; no. 10; p. 1118
Main Authors Cheng, Xiaofei, Yang, Jun, Xu, Tiaojian, Xu, Qianyuan
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.10.2021
Subjects
Calibration
Coefficients
Construction costs
Flow velocity
Hydrodynamic coefficients
Hydrodynamics
Laboratories
Ocean floor
physical model test
Pressure distribution
Ratios
Reynolds number
Safety engineering
Sensors
Simulation
submarine piggyback pipeline
Submarine pipelines
the action of waves and current
Vortices
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Summary:In this study, physical model tests are used to investigate the effects of a varying number of wave and current parameters, the gap ratios between the pipeline and seabed, the spacing ratios between the two pipelines and the diameter ratios on the hydrodynamic coefficients of the large, small pipeline and pipeline system (bundle) in a piggyback configuration under the combined action of waves and current. The results show that, compared with the pure wave field, the existence of the steady current will lead to a decrease in hydrodynamic coefficients. In addition, the results indicate clear differences between the hydrodynamic coefficients of the large pipeline, small pipeline and piggyback pipeline system. The experimental results on hydrodynamic coefficients can be used as an important basis for the safety design of a submarine piggyback pipeline.
ISSN:2077-1312
2077-1312
DOI:10.3390/jmse9101118