Time-domain Numerical Simulation of Flooding ship

Numerical Simulation of Electromagnetic Acoustic Transducer in the Time Domain

A novel multistage numerical modeling approach to simulate acoustic-wave generation and propagation of an electromagnetic acoustic transducer (EMAT) is presented. The model assumes a uniform static magnetic field in a conducting half-space. A meander coil winding situated above the half-space is driven by a transient high-frequency current pulse. The numerically computed eddy currents in the co...

A Time-Domain Numerical Study of Passive and Active Anti- Roll Tanks to Reduce Ship Motions

Numerical Simulation of Damaged Ship Motion in Waves

The coupling motion of heave, pitch and roll of intact ship and damaged ship in waves, and the flow of flood water in damaged tank have been simulated based on viscous theory. The calculation model is a 29000 t tanker model moving at a constant speed with damaged tank in midship area. Three cosine waves including head waves, beam waves and oblique waves are simulated by boundary input method re...

Collision Numerical Simulation Research of River-Sea Ship

Collision simulation of river-sea ship is accomplished based on nonlinear finite element method. Firstly, we discuss the development of collision analysis methods including theoretical methods, empirical formula method, experimental techniques and numerical analysis methods, and introduce the Central Difference Method adopted in the collision simulation. Then, model of ship structure and rigid ...

The Numerical Simulation of Ship Waves Using Cartesian Grid Methods

Two different cartesian-grid methods are used to simulate the flow around the DDG 5415. The first technique uses a “coupled level-set and volume-of-fluid” (CLS) technique to model the free-surface interface. The noflux boundary condition on the hull is imposed using a finite-volume technique. The second technique uses a level-set technique (LS) to model the free-surface interface. A body-force ...