... that the riser transporting spiral flow is significantly affected by non-linear effects. Furthermore, the particles were uniformly distributed inside the riser due to the circumferential effects of the spiral flow, and the occurrence of internal flow density fluctuations was reduced. As a consequence, riser...

... of surrogate particles for experimental testing of paint flake emissions originating from offshore structures Niklas Czerner, Christian Windt, Nils Goseberg Technische Universita¨t Braunschweig, Leichtweiß-Institute for Hydraulic Engineering and Water Resources, Dept. of Hydromechanics, Coastal and Ocean...

... displacement of plate is p0 , which is only decided by the incident wave and equals to the wcw displacement of water particles under incident wave. The pressure distribution in water in front and back of the plate is . p1 x,t p0 e +e t x cw t x cw 2 wcw p0 mf 2 wcw e...

... ABSTRACT Submarine pipelines face the risk of accidental impact due to ship anchoring in the channel area, and rock berm protection is a commonly used means of protection. In this paper, a numerical simulation method coupled with smooth particle hydrodynamics and finite element method is used...

... by computational fluid dynamics technology based on Reynolds’ mean equation. The minimum total resistance is the optimization objective, and the improved particle swarm optimization algorithm is used to drive the optimization work. The total resistance of the optimized ship scheme is reduced by 3.64%, and the tail...

... ABSTRACT In this research, the vertical bending moment in the mid-ship when a ship encounters nonlinear waves is investigated. To calculate the nonlinear structural response, a 3D Computational Fluid Dynamics (CFD) simulation of the ship, based on the Smoothed Particle Hydrodynamics (SPH...

... ABSTRACT During marine navigation, collisions between ship and reefs, icebergs may lead to structural damage, which significantly compromises the ship's stability and buoyancy, leading to hull capsizing and human casualties. The Moving Particle Semi-Implicit (MPS) method is used to simulate...

... swash plate as well as the pseudo-two dimensional. INTRODUCTION Dry bulk cargoes, e.g. iron ore, are aggregates of granular particles transported by bulk carriers. The hull is subjected to internal pressure from the cargo due to ship vertical acceleration caused by wave. The cargoes have soil-like...

... mathematics of computing simulation unit fracture displacement stiffened plate geology geological subdiscipline equation silling penetrate ship hull structure structure particle fracture simulation propagate engineering international journal Proceedings of the Thirty-fourth (2024...

..., corrosion and debonding detection. algorithm characteristic neural network machine learning artificial intelligence cfrp optimization algorithm particle particle swarm optimization algorithm cloud diagram swarm optimization algorithm ith particle evolutionary algorithm detection...

... ABSTRACT Deep-sea mining pumps play a vital role in deep-sea mining operations. Typically, these pumps are multi-stage centrifugal pumps designed to deliver adequate hydraulic power. Given the complex and fluctuating concentration and size distribution of ore particles, understanding...

... mathematics of computing modeling & simulation mining mineral pipe geology sulfide engineering particle zhao numerical simulation diagram geologist characteristic equation journal zhang international ocean deep-sea mining vehicle overset mesh consumption ABSTRACT...

... particle geologist geology shear strength sustainability environmental impact assessment social responsibility nodule collector experiment simulated sediment zhao isope nodule disturbance engineering nodule particle collecting chung deep-sea sediment xiao turbidity ocean mining symp...

... ABSTRACT The carrier material (CM) circulation system was proposed to lift ores from the seafloor. The viscous characteristics of CMs which are the mixture of bentonite suspension and sand particles are one of the most important properties to evaluate the pumpability and lifting efficiency...

... reservoir simulation production monitoring fraction geologist reservoir surveillance pipe geology particle dissipation cfd-dem equation diameter interaction zhang powder technol fluid dynamics multiphase flow production control coarse particle regime concentration particle...

... on the deposition and blockage processes of hydrates in complex structured pipelines is still relatively limited. Research on numerical simulation is mainly focused on simulating the transport and deposition of ordinary particles in complex flow channels. For example, Dutta et al. (2016), Ji et al. (2019...

... to investigate the influence of various parameters on the force characteristics of the particle engaged in Coandă-effect-based hydraulic collection. The results indicated collective characteristics of initial augmentation followed by subsequent diminution in both lateral and vertical forces. Especially...

... dimensions; sediment concentration and particle trajectories; discrete phase model (DPM). INTRODUCTION The vast expanse of the deep oceans is a treasure trove of resources on Earth, containing huge reserves of solid mineral resources, including polymetallic nodules, cobalt-rich crusts, and polymetallic...

... on the strength of saturated sand, but most of them are based on the pure sand model with uniform particles, which usually contains no or very little fine-grained soil in the particle composition of the sand, such as Canada's Ottawa sand, Japan standard sand and Fujian standard sand. However, in practical...

.... At present, through experiments on the concentration distribution of medium coarse particle sizes during transportation in pipelines, it is known that there is a significant layering phenomenon in the flow of the pipeline, which is composed of a sliding layer at the bottom of the pipeline and an upper...