...) is an effective tool to simulate the behavior of granular soil particles (Cheng et al., 2017), and can be coupled with Computational Fluid Dynamics (CFD) to model the interaction between the particles and the surrounding fluid. Such coupled CFD-DEM codes have been developed and widely used to study the multiphase...

... trajectories near seabed are nearly cyclic circular motion. The in-line force on a cylinder in oscillatory flow agrees with Morison Equation, and a linear sum of the drag forces and inertial forces per unit length are just shown as the following Eq. 1. single cylinder cheng arrangement vortex mesh...

... wave-current conditions.(Cevik, 1999; Yang,2008; Cheng,2009; Zang, 2010; Wu,2014; Cheng, 2014). numerical model sea condition offshore pipeline numerical simulation storm surge condition pipeline midstream oil & gas shandong province reservoir simulation wave condition bed profile...

... and Hennessy, 1972; Li and Cheng, 1999; among others) calculate the bed profile through iterations until the bed shear stress is reduced to a critical value. The main difference among various potential-flow models is the method chosen for flow calculation. The limitation of the potential-flow models...

... resonant wave height subsea system fpso category liquified natural gas upstream oil & gas body draft resonance cheng A Two between with ifferent rafts Nima Moradi, Tongming Zhou, Liang Cheng School of Civil, Environmental and Mining Engineering, The University of Western...

... pipelines over the past several decades have been studied through physical tests (e.g. Sumer and Fredsøe, 1990; Cevik and Yuksel, 1999; Bing Yang et al., 2008; Cheng et al., 2014). As an extension, parts of the studies about scour could be carried out through numerical methods too, which require that all...

... as physical model testing. equation platform cheng protection mattress physical model testing offshore pipeline stabilisation coefficient upstream oil & gas application embedment amplification concrete mattress stability concrete mattress design stability design high safety factor...

... free surface profile evolution fission process engineering particle upstream oil & gas underwater step solitary wave cheng transmission Numerical Modelling of Solitary Wave Propagation over Underwater Steps with SPH Huaxing Liu Maritime Research Centre, College of Engineering, Nanyang...

... by two parameters: significant wave height and mean wave period. roll motion hydrodynamic impact pressure exceedance tank significant wave height magnitude irregular seaway cheng natural period linear theory irregular wave spectrum arai reservoir simulation bulk carrier mean wave...

... eigenfrequencies and axial as well as bending characteristics for designers, when a certain number of joints with proper stiffness is installed at proper locations along the pipe (Chung and Cheng, 1995; Cheng and Chung, 1996). Installation of axial vibration dampers along a long pipe not only reduces the axial...

... Sediment Transport Process of Local Scour Around Pipelines Fang/un Li and Liang Cheng The University of Western Austral ia Nedlands, Austral ia ABSTRACT In this paper, non-equilibrium sediment transport processes around marine pipeline are simulated using a Large Eddy Simulation (LES) turbulence flow model...

... to evaluate and understand the process of local scour around pipelines. Over the last two decades, mainly two kinds of numerical models for scour prediction have been developed. One is based on the potential flow theory, such as Hansen et al. (1986) and Li and Cheng (1998), and the other is based on the k-e...

... and Loden (1980) and Cheng and Chung, 1995)(Fig. 1). mse horizontal pipe elastic joint entire pipe system vector eigenvalue chung cheng vertical pipe fem buffer rigid particle modeling pipe element thrust vector pipe stiffness matrix axial force Proceedings of the Ninth (1999...

... on Long Vertical Pipe in 3-D Nonlinear Motions -- Part II: Numerical Examples by MSE and FEM Results B. Cheng Tsinghua University Beijing, China lin S. Chung Colorado School of Mines Golden, CO, USA ABSTRACT In applying external forces or thrust vectors to the elastic joints along a vertical deep-ocean...

... on the seafloor. One of the initial concepts was to install elastic joints along the pipe, and was successfully modeled with the elastic joints in the updated 3DNLPIPE code. I t was previously demonstrated (Chung and Cheng, 1995; Cheng and Chung, 1996) that the elastic (flexible) joints can be made very effective...

... stiffness torsional vibration biaxial vibration offshore axial damper cheng axial stress excitation axial vibration resonance fundamental axial period elastic joint chung pipe amplitude metals & mining deflection vertical pipe Proceedings of the Sixth (1996...

... stiffness cheng wb 448 bottom buffer Proceedings oltbe Fifth (1995) Intel7llltiofllll Offshore and Polar Engineering Conference The Hague, The Netherlaruls,}une 11-16, 1995 Copyright @ 1995 by The IntematiolUll Society olOffshore and Polar Engineers ISBN 1-880653-16-8 (Set); ISBN 1-880653-18-4 (Vol II...

... deposit crust offshore operation pipe system miner seafloor artificial intelligence cheng mining system control system chung upstream oil & gas Proceedmgs of the Fourth (1994) International Offshore and Polar Engmeenng Conference Osaka, Japan, Apnl 10-15,1994 Copynght © 1994...