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Keywords: pipe
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Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1177
...-ocean mining system and technology of automatic ship-pipe-buffer-link-control with a self-propelled, automatic track-keeping miner or mining vehicle. The commercial mining system incorporates more recent computer-controlled automatic position or track-keeping control operation simulations, as well...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1251
... Abstract Cold-water pipe (CWP) is one of the most novel and challenging devices in the Ocean Thermal Energy Conversion (OTEC) floating structure. When the internal fluid velocity inside the pipe exceeds a certain critical velocity, the CWP may cause flutter or divergence. In this paper...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3184
.... The distribution characteristics of slurry concentration within the pipe cross section under different flow velocities and concentrations are analyzed. Slurry transportation in pipeline has different flow regimes under different flow velocities and concentrations, and the limit deposition concentration is about 50...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3268
... more difficult to measure experimentally. In order to focus the attention on what happens during the percolation inside the drain, a simplified domain is taken into account in order to achieve the tridimensional modeling of filtering phenomenon inside a perforated pipe by means of the OpenFOAM solver...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2110
...-independence, a parametric study is carried out to investigate the effect of pipe diameter, mixture velocity, and solid volume concentration on the entry length by analyzing the deviations of pressure drop, hydraulic gradient, solid phase velocity and volume fraction between different cross suctions downstream...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2117
... to assist the determination of axial resistance in routine design. Interpretation of Normal Force The axial resistance of a pipeline buried in rockfill is the product of a friction coefficient and the normal force surrounding the pipe. To interpret the experimental data it is necessary to consider...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2120
... Abstract Repairing cracked pipelines with fiber reinforced polymer is very practical and efficient for subsea pipelines in service. This article aims to study the bearing behavior of thin-walled aluminum-alloy pipes with through-wall crack after carbon fiber reinforced polymer (CFRP) repairing...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2125
... Abstract Traditional pipe-in-pipe systems installed by reel-lay are straightened on the lay-vessel. The process results in the inner and outer pipes having opposite residual moment and the inner pipe is under-straightened, which typically means hogging residual curvature in the sag bend...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2127
... Abstract Mechanically lined pipe is a cost-effective solution to produce corrosive fluids. A thin tubing made of corrosion resistant alloy is fitted into a carbon steel backing pipe. Under repeated or large bending, the liner can detach from the backing steel to form potential wrinkles. While...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2130
... will be evaluated for the all conditions. Then the program will results in the pipeline the predicted free spans and span height. With the pipe-in-pipe model, the analysis result can be more in line with the actual situation. INTRODUCTION This article performs the bottom roughness of 12′/18′ subsea multiphase...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2144
... Abstract Effluent transport is an important issue in ocean engineering and impact from effluent greatly affects the ocean environment. This study discusses two situations: thermal effluent discharged from pipes with and without diffusers. With different diffusers, the process of dispersion...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2147
... Abstract Long-distance transportation of coarse-grained dredging materials might be a formidable task. Researches on conveying properties of coarse-grained soil are mostly based on indoor small/medium-sized pipes, few demonstration analysis and researches with field test of large-scaled pipes...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2162
... Abstract 1g model test is carried out to evaluate the ultimate lateral capacity of the spiral model pile. The model piles are scaled down using a proper similarity equation. In order to identify the lateral capacity of the spiral model pile, the conventional pipe and flat bar model piles were...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1123
... is the cutting and recycling of casing pipes. It is particularly important to apply appropriate cutting and fishing tools through controlling reasonable cutting parameters, to ensure the casing pipes cut and recycled quickly and efficiently because of the high cost of offshore operations. Traditional method...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1111
... particle material in the vertical pipe. Xia et al. (1997) founded a calculating model to predict and optimize the hydraulic lifting parameters of a manganese nodule mining system. production monitoring hydraulic fracturing production control artificial intelligence concentration reservoir...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3116
... ABSTRACT The process of water intake in power engineering is discussed in this study. Preventing objects inserted into the intakes from destroying the mechanism and organisms drawn into the pipes from injuring themselves and less head loss generated in water intake are both important issues...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2180
... below 15 that are subject to external pressure and bending, without affecting the level of conservatism underlying the code framework. The limit-state formulation for load-controlled behaviour is found to be increasingly conservative for thicker pipe walls. INTRODUCTION Background Intecsea reviewed...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2158
... ABSTRACT Corroded pipes are increasingly repaired with composite material because of its low cost, simple and quick process. However, the repair effect will be affected by factors such as long time loads, seawater immersion and so on. This paper studies the effect of prolonged seawater...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2200
... concentration flow simulation pipe local scour upstream oil & gas sediment phase model parameter three-phase flow simulation multiphase flow simulation experiment scour depth fluid dynamics flow model sediment transport interface fluid phase jet flow pipeline scour process...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2146
... the stress-strain and deformation of pipes under pure bending. The results coincided with the results from the general method (Pagano,1972). By assuming RTPs as homogenous cylindrically orthotropic pipes, Sun et al. (2014a; 2014b) proposed the homogenization method based on stress approach to predict...

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