..., and Zhao, 2012) and reduces dredging efficiency significantly. Researchers all over the world study the suspended solid diffusion in dredging construction through different methods, mainly including on-site observation and numerical simulation. In 1990, Macdonald (1991) conducted experiments on site about...

... growth, and its growth rate is related to the water molecules through the hydrate shell penetration, the guest molecules diffusion mass transfer rate. The growth of hydrate after nucleation undergoes two processes: the lateral growth of hydrate membrane and the vertical growth of hydrate shell. During...

... as the source term in the advection-diffusion equation, and the hydrodynamic equations have been solved to describe the flow field. As a result, a steady uniform flow is assumed, and the coupling between the vehicles and fluid is neglected. This study is based on the research of the interaction between the DSMV...

... been proposed recently. But there is a lack of understanding on the flow and diffusion of solidified slurry pumped into the developed scour holes for scour repair as the fluidized material solidifies gradually. In this study, a multiphase flow numerical study was carried out on the pumping operation...

... reservoir simulation diffusion sea area diagram water management hydrodynamic model tide concentration calculation coefficient sewage outfall tidal level station dongtou district pollutant flow velocity verification cod concentration discharge optimal site water quality...

... welding hacc proceedings transformation test piece microstructure bead hardness hydrogen hydrogen concentration high strength steel inspection plastic strain steel fusion zone simulation prediction diffusion ABSTRACT Hydrogen-assisted cold cracking (HACC) is one...

... ABSTRACT In this paper, the characteristics of the flow field inside the deep-sea aquaculture cage in the sea and the effects of different oxygen supply methods on the diffusion of micro-nano bubbles and the distribution of feed particles were studied by numerical simulation. The results show...

... to model the advection-diffusion behavior of the petroleum gas leaked from an oil storage tank surrounding by an array of tanks in a reserve base. In the simulation, the wind condition is verified by a wind tunnel experimental data. The location of the gas leakage is set on the top of a chosen tank...

... to the seafloor along z direction. diffusion of mixture is recorded within 20s after launching of devices. INTRODUCTION Interest in deep sea mining is not new (Wedding et al., 2015). Since early 1970s, the potential of abyssal manganese nodule has raised considerable public attention (Erik et al., 2019...

... and 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...

... vortex generated from the body and its diffusion to the fluid domain should be accurately evaluated, we focus on vortex method. As calculation methods for the viscous fluid proposed previously, mesh method, particle method and vortex method etc. are given. In this research, a fluid domain around...

... In this work, computational fluid dynamics (CFD) simulations have been conducted on leaked LNG vapor diffusion in which the gas is discharged from the vent post of a LNG powered RORO ship. A numerical model is proposed based on an open source Computational Fluid Dynamics (CFD) tool called...

... by the mechanism proposed by Somerday et al. (2013). On the other hand, different mechanisms, which are the reaction rate of CO with the iron surface and time for hydrogen diffusion in the material, dominated the inhibitory effect of CO. INTRODUCTION Hydrogen uptake of a material is an essential process...

... was compared, and then the diffusion of gas clouds and group risk and individual risk under different firewall heights were analyzed. On this basis, a new type of firewall structure characterized with cooling circular tube filled with water was proposed. The effect of two types of firewall on risk reduction...

... ABSTRACT Vortex method is a numerical calculation method for a viscous fluid in time domain, which can consider the vorticity creation from body surface and diffusion of the vorticity into the fluid. To apply this method to the actual design of a floating body with fins installed to reduce its...

... ABSTRACT Diffusion measurements and thermal desorption measurements have been performed on a X70 pipeline steel, in as received and normalized and quenched condition, after being hydrogen charged for 200 h at 100 MPa hydrogen gas pressure and 85°C. Numerical simulations based on the assumption...

... Application of particle tracking method in rapid forecasting of migration and diffusion of red tide in the East China Sea Liangyu Chen Information Department, East Sea Information Center, SOA China. Shanghai, China Xiaodan Mao Department of Key Laboratory, National Engineering Research Center...

..., which is dominated by the rotational tidal current, show more diffusive characteristics than those released in Xiyang Trough, where the tidal current is bi-directional. The fraction of total wastewater that originated from different tidal troughs is calculated, which indicate that the source...

... ABSTRACT Clad pipes are manufactured both with and without a thin nickel interlayer. Diffusion of carbon from the base material to the clad, which degrades the structure adjacent to the interface and increases the local embrittlement, is effectively reduced by this interlayer. However...

.... The turbine load is replaced for the orifice load in order to simplify the problem. In analysis of the wave motion, vortex method which can consider fluid viscosity is used. Vorticity layer model and Core-Spreading method are used in order to calculate vorticity creation from body surface and diffusion...