Results 91 to 100 of about 669 (217)

Protection of Offshore Pipelines with Adding a Longitudinal Blade beneath the Pipe

نشریه مهندسی دریا, 2016
A number of experiments have been carried out in the current paper to investigate the effect of adding a longitudinal impermeable blade beneath the offshore pipelines on decreasing the scour around them.
Habib Hakimzadeh, Alireza Mohammadi
doaj  

Experimental Investigation on the Influence of Some Unsteady Flow Parameters on Bed Scour under the Pipeline Crossing Across the Current Experimental Investigation on the Influence of Some Unsteady Flow Parameters on Bed Scour under the Pipeline Crossing Across the Current

علوم آب و خاک, 2020
Erosion under the conveying pipeline affected by river flow at the cross to rivers is one the important reasons for breaking the pipelines that can lead to leakage.
E. Shaker, S. M. Kashefipour, M. shafai bajestan   +2 more
doaj  

A model for predicting pipeline sinkage induced by tunnel scour

, 2014
The current design practice for subsea pipeline on-bottom stability (e.g. DNV-RP-F109) does not account the effect of sediment transport around a pipeline.
Luo, Chengcai, An, Hongwei, Cheng, Liang, White, David   +3 more
core  

Scour depth analysis beneath a submerged pipeline featuring a protective blade configuration

Results in Engineering
The primary objective of the current research extends beyond the examination of the impact of the protective blade on the geometric features, namely length (L) and depth (H), of the scour hole formed beneath the cylindrical submerged pipeline.
F. Karamzadeh, A. Masjedi, M. Heidarnejad, A. Bordbar   +3 more
doaj   +1 more source

Pipeline Scour Rates Prediction-Based Model Utilizing a Multilayer Perceptron-Colliding Body Algorithm

, 2020
In this research, the advanced multilayer perceptron (MLP) models are utilized to predict the free rate of expansion that usually occurs around the pipeline (PL) because of waves.
Lloyd Ling, Ahmed El-Shafie, Mohammad Ehteram, Ali Najah Ahmed, Sarmad Dashti Latif, Haitham Abdulmohsin Afan, Fatemeh Barzegari Banadkooki, Chow Ming Fai   +7 more
core   +1 more source

Numerical study of scour depth effect on wave-induced seabed response and liquefaction around a pipeline [PDF]

, 2019
Wave-induced liquefaction depth is a key factor in providing the safe design of submarine pipelines. However, existing numerical studies simplify the seabed as a flat foundation and ignore the effect of scour depth on wave-induced seabed response and ...
Li H, Liu JZ, Chen, Xuguang, Hu, Cun, 胡存, Li, Hui, Wang, Shuqing, Wang SQ, Chen XG, Liu, Jinzhong   +9 more
core   +1 more source

Effect of scour-blocker on a submarine pipeline

, 2010
Scour under submarine pipelines is a serious problem for industrial and environmental concerns. Hence, to search for a method to mitigate the extent of the scour is urgent.
Zhang, Xiao Yue
core  

Time Scale of Scour Below Submarine Pipeline Under Combined Waves and Currents With Oblique Incident Angle

, 2017
Available formulae for the time scale of scour below a submarine pipeline are so far mainly restricted to waves-only and currents-only conditions with normal incidence and no burial of the pipeline.
Zhipeng Zang, Liang Cheng, Guoqiang Tang
core   +1 more source

Numerical investigation of local scour around submerged pipeline in shoaling conditions

, 2018
Water waves play an important role in local scour around subsea pipelines laid on the sandy seabed, especially in shallow water regions. In this paper, a two-dimensional numerical model is employed to predict local scour around submarine pipelines under ...
Lin Lu, Zhao, Ming (R16667), Liu, Mingming (R18787), Lu, Lin, Ming-ming Liu, Ming Zhao   +5 more
core   +1 more source

Response Model for Urban Area Source Pollution and Water Environmental Quality in a River Network Region. [PDF]

Int J Environ Res Public Health, 2022
Lai Q, Ma J, He F, Wei G.
europepmc   +1 more source