Results 11 to 20 of about 11,917 (312)

Reliability Modelling of Pipeline Failure under the Impact of Submarine Slides-Copula Method

open access: yesMathematics, 2022
The instability of seabed slope sediments is the main factor influencing the safety of marine resource development. Therefore, to ensure the safe operation of submarine pipelines under complex and uncertain seabed rock and soil conditions, a reliability ...
Laifu Song   +4 more
doaj   +1 more source

Submarine pipeline stability under currents and waves action

open access: yesRUDN Journal of Engineering Research, 2021
Pipelines are widely used in recent decades because their eco-friendliness, safety and profitability of transportation. Their length can be more than hundreds and thousands of kilometers. Submarine pipelines got wide distribution. Their constructing must
Konstantine P. Mordvintsev   +2 more
doaj   +1 more source

Numerical simulation on transverse buckling behavior of submarine pipeline with defects

open access: yesYou-qi chuyun, 2020
Local or overall initial geometric defects may inevitably occur in the manufacturing, laying and operation of submarine pipelines. To study the transverse buckling behavior of pipelines with defects laid on the seabed surface, the nonlinear numerical ...
Zewu WANG   +3 more
doaj   +1 more source

Three-Dimensional Ultrasonic Reverse-Time Migration Imaging of Submarine Pipeline Nondestructive Testing in Cylindrical Coordinates

open access: yesJournal of Marine Science and Engineering, 2023
Submarine pipelines are a safe and energy-efficient mode of gas transport. However, due to the complex manufacturing process and harsh operating environment, submarine pipelines are subject to fatigue cracks under long-term cyclic loading.
Daicheng Peng   +5 more
doaj   +1 more source

Fatigue Reliability Analysis of Submarine Pipelines Using the Bayesian Approach

open access: yesJournal of Marine Science and Engineering, 2023
A fracture mechanics-based fatigue reliability analysis of a submarine pipeline is investigated using the Bayesian approach. The proposed framework enables the estimation of the reliability level of submarine pipelines based on limited experimental data.
Arman Kakaie   +3 more
doaj   +1 more source

Floatation of Buried Submarine Pipeline under Cyclic Loading of Water Pressure -Numerical and Experimental Studies- [PDF]

open access: yes, 2000
A dynamic response of a submarine pipeline buried in sandy seabed sediments to water loading generated by harmonically oscillating water-table vertical movements is examined in the present report experimentally and numerically.
Maeno, Shiro   +2 more
core   +1 more source

Prediction of submarine pipeline corrosion based on parameter optimized GM-Markov model

open access: yesYou-qi chuyun, 2020
To avoid accidents such as perforation leakage caused by submarine pipeline corrosion, and to timely maintain and protect submarine pipelines, the prediction method for submarine pipeline residual life based on parameter-optimized GM-Markov model was ...
Xinsheng ZHANG   +3 more
doaj   +1 more source

Numerical modelling of erosion and sedimentation around offshore pipelines [PDF]

open access: yes, 1990
In this paper a numerical model is presented for the description of the erosion and sedimentation near pipelines on the sea bottom. The model is based on the Navier-Stokes equations and the equation of motion and continuity of sediment.\ud \ud The ...
Beek, F.A. van, Wind, H.G.
core   +3 more sources

Influence of sand properties on sedimentation of heavy oil sands in submarine pipelines

open access: yesYou-qi chuyun, 2021
The presence of sand in submarine heavy oil pipelines may bring a series of problems to the pipelines and offshore processing platforms. As for the sedimentation of sands contained in the heavy oil transported by submarine pipelines, the feasibility of ...
Xiaoming HU   +6 more
doaj   +1 more source

In-silico research of the influence of gas injection into the subsea crude oil pipeline on the paraffin solid phase deposition [PDF]

open access: yesE3S Web of Conferences, 2021
The aim of the article is presenting of the preliminary results of simulations showing behaviour of paraffin deposits in submarine pipelines. The described parameters for changing the deposition of the solid paraffin phase with the flow of crude oil ...
Wójcikowski Artur, Nagy Stanisław
doaj   +1 more source

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