... ABSTRACT Under the action of high earthquake load, during the water filling operation of shield tunnel, on the one hand, the water body in the tunnel increases the overall stiffness of the tunnel lining structure which increases the inertia force of the structure, on the other hand, the water...

...Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference Rhodes, Greece, June 16 21, 2024 Copyright © 2024 by the International Society of Offshore and Polar Engineers (ISOPE) ISBN 978-1-880653-78-4; ISSN 1098-6189 www.isope.org Building Submerged Floating Tunnel...

... ABSTRACT To ensure the traffic efficiency of ships passing through tunnels, this article introduces the towing method of ships passing through tunnels in the Three Gorges New Channel. And based on the Arena software platform, construct a simulation model for ship traffic efficiency. Research...

... boundary shield setup dtu 10mw influence experiment mrf setup wind turbine vladimir krasilnikov resolution turbine simulation torque tunnel interaction Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference Rhodes, Greece, June 16 21, 2024 Copyright ©...

... with a hybrid coarse-fine mesh strategy, are employed to capture the dynamics of the variable-length umbilical cable moving in an underwater tunnel. All external forces acting on the flexible cable are considered, including fluid effects and contact forces. The simulations demonstrate that cable disturbances...

... equation elastic deformation formulation tunnel ABSTRACT Discrete-module-based (DMB) method has been successful in past years and demonstrated its performance for hydroelasticity analysis of various floating structures. However, despite its many advantages, the method involves inconsistency...

... for the radial load distribution adopted. The presence of shaft appendages is considered as well, thus simulating a typical twin screw vessel configuration. Measurements have been carried out on two different scaled model of the propellers in the cavitation tunnel of UNIGE using Laser Doppler Velocimetry (LDV...

... ABSTRACT This paper aims to investigate the dynamics of a submerged floating tunnel (SFT) with inclined taut mooring lines under tsunami-like freak waves. The SFT is modeled using the lumped-mass line model and the dummy-connection-mass method to examine the hydro-elastic behavior...

... ABSTRACT The propulsive performance of dual flapping foils in a tunnel and their vortex motions have been studied through numerical simulations. The dual flapping foils can be high efficient. They can be used for the propulsor of surface vessels or underwater vehicles. Computational fluid...

... ABSTRACT A submerged floating tunnel’s (SFT) cross-sectional geometry is one of the main factors influencing its hydrodynamic characteristics. Minimizing the drag and lift is important for reducing the displacement of the structure and load on the mooring system. In this study, a parametric...

... ABSTRACT For the Hong Kong-Zhuhai-Macao Bridge project, the immersed tunnel is one of the most difficult construction immersed tunnel in the world. The ground of the transition section of immersed tunnel has thick clay with high water content and low bearing capability. The method of compaction...

... ABSTRACT Submerged floating tunnel (SFT) is a new type of transportation infrastructure for crossing sea straits of relatively deeper water. Comparing with the fixed tunnel, the main challenge in designing a SFT is the stability maintaining in complex hydrodynamic environment, especially...

... ABSTRACT Deflection of the tube of submerged floating tunnel (SFT) under environmental loading such as current, long crest wave or even sea density variation as well as its vibration characteristic are of great interest to engineering researchers. In this paper, the simplified two-dimensional...

... ABSTRACT At present, there is no ripe experience of settlement characteristics and calculation of soft foundation in offshore immersed tube tunnel. In this paper, rebound and recompression modulus of the natural foundation of immersed tube tunnel are studied by laboratory consolidation...

... ABSTRACT In this paper, the behaviors of the ground-tunnel interface of submerged floating tunnels (SFTs) and traditional bored subsea tunnels are investigated through numerical analyses. The analyses consider both permanent loads (self-weight, hydrostatic pressure, buoyancy etc...

... on the Computational Fluid Dynamics (CFD) method of viscous fluid, the Aero-Hydrodynamic characteristics of the main hull and the tunnels are analyzed by combining the six-degree-of-freedom (6DOF) motion model and the overset grid technique. The analysis results indicate that: The performance of the high-speed planing...

... ABSTRACT In this study, time-domain dynamic analysis of a submerged floating tunnel (SFT) is carried out under wave and seismic excitations to evaluate the safety of a train passing through a tunnel. The in-house program is modified to simulate dynamics of the SFT and the train. The equation...

... and drag reduction only by its unique shape advantages. There are good prospects for both civilian and military use. The "Stiletto" is a successful case of transformation on the basis of the M-type yacht. experiment different speed tunnel upstream oil & gas simulation wavelength...

... ABSTRACT Effects of moving loads and wave excitations on a 900-m-long SFT (submerged floating tunnel) are presented and discussed. Floater-mooring coupled dynamic analysis is done by a time-domain numerical simulation program. Hydro-elasticity of the tunnel and mooring lines are considered...

... ABSTRACT In this paper, a series of experiments are conducted to investigate the motion characteristics of the coupled tunnel-pontoons system in beam irregular waves during element ballasting. The 6-DOF motions of both the tunnel and pontoon were measured synchronously and presented...