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Keywords: particle
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Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1109
... planned to be transported from the depths to the surface as seawater slurry, pumped up through the riser pipelines. It is essential to separate the nodules, broken pieces and the particles from the transportation, from the seawater before suitable disposal of the seawater. As compared to dewatering ashore...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1110
... model and Coandă-effect-based model are investigated with focus on the nodules collecting flow field with and without the sphere. The flow field information near the nodule pick-up device is measured by using particle image velocimetry (PIV) system. Velocity vectors, streamlines, and velocity...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1111
... solidliquid mixture was measured by flowmeters, whereas the movement of particles was recorded by a high-speed camera. The computer vision library OpenCV and object detection library YoloV3 were applied to detect the number and position of particles, which were used to calculate the volume concentration and...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1108
... coanda-effect-based method nodule particle flow discharge sediment-seawater mixture metals & mining environmental disturbance suck-up-based method diffusion polar engineer double-jet hydraulic method pickup device manganese nodule international society Numerical Study on Collecting...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1227
... ABSTRACT In recent research of ice resistance simulation, the coupling effect between ice and water is usually neglected. To consider the coupling effect of ship/ice/water, based on finite element method and smoothed particle hydrodynamics method, the FEM/SPH coupling method is established...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1208
... of Yamakuni River on July 2012. Marine debris was modeled to be particles whose behaviors observed by Lagrangian method with an improvement that include a wind component directly driving the debris. It was found that wind plays the most important role at drifting the particles across Suo-Nada...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1221
... water body is simulated by using Computational Fluid Dynamics(CFD). In the discrete element simulation of ship ice breaking process, flat ice is composed of spherical particles. At the same time, the influence of buoyancy, drag and added mass force on ice element is considered. During the interaction...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1206
... discussed in detail. Furthermore, the marine garbage treatment program is analyzed. It is found that the topographical features of the location of the ocean waste source affect not only the length of the particle's final drift trajectory but also the particle's diffusion. The increase of wind speed will...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2148
... energy consumption particle optimization working point operation 2-pump mode tshd restriction excavation restriction slurry pump Study on Performance Analysis and Optimization Strategy for Conveying System of Hydraulic Dredgers Feixin Wang1, Hongsheng Zhang1, Jinhong Du2, Haifei Zhang1 1...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1207
... ABSTRACT Plastic waste in the ocean is one of the most consequential issues of humankind. Statistics show that approximately 12 million tons of plastic are dumped into the ocean and a total of 268,940 tons of plastic consisting of 5.25 trillion particles are distributed over the surface every...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2197
... ABSTRACT Sediment incipient motion is the first stage of the whole process of local scour around a marine infrastructure. Most previous investigations ignored seepage flow on the mobility of bed particles except a recent study including the effects of vertical seepage flow in the prediction of...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2216
... ABSTRACT In this study, an unresolved CFD-DEM was used to investigate a fluid flow and a behavior of sediment particles around a monopile. In order to consider the interaction between particles on the seabed and a current, an improved CFD-DEM solver was implemented within the OpenFOAM framework...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2192
... ABSTRACT In oil and gas production and transportation systems, the particles carried with the conveying media usually exert accumulative collision on fittings such as elbows and tees in pipelines and piping section of facilities. The serious erosion damage may cause failure of the facilities...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3146
... ABSTRACT In present study, the interaction between internal solitary waves (ISWs) and a uniform slope is numerically studied based on the moving particles semi-implicit (MPS) method. Aiming at the stratified flows, a multiphase MPS method is firstly developed on the basis of the original single...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3147
... ABSTRACT In Smoothed Particle Hydrodynamics (SPH) schemes, the density renormalization and density dissipation term are usually employed to suppress the unphysical high-frequency oscillation of pressure. The application of both the former two algorithms in liquid sloshing has been further...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3148
... ABSTRACT Anchors are indispensable and important structures in ocean engineering. The majority of previous studies on anchors were mostly based on Finite Element Analysis, but the large deformation of soil was not well handled. This study applied smoothed particle hydrodynamics (SPH) to...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3145
..., 2018), e.g. Smoothed Particle Hydrodynamics (SPH; Gingold and Monaghan, 1977), can be considered as one of the appropriate computational frameworks thanks to their major advantages in treating complex boundary conditions. In addition, the projection-based particle methods, e.g. Incompressible SPH (ISPH...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3149
... ABSTRACT In this study, an improved mesh-free method is used to simulate the dambreak flow over partial ice cover. The spatial operators and time-splitting scheme are based on the Moving Particle Semi-implicit (MPS) method. The dam-break wave can cause violent flow when encounters the partial...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3248
... ABSTRACT In this research, the investigation on simulation of sloshing pressure based on SPH is mainly demonstrated. Two different boundary conditions, dynamic boundary conditions (DBC) and dummy particle conditions (DPC), are utilized in the SPH models. The benchmark test with respect to the...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3225
... ABSTRACT The research for the effect of the restitution coefficient (RC) between particles on slurry CFD simulation is limited. In this study, using the Eulerian multiphase model based on the kinetic theory of granular flow, a steady state 3D multiphase hydrodynamic model was established to...

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