Hydrodynamic analysis of ship manoeuvrability in shallow water using high-fidelity URANS computations

High-Fidelity Finite-Element Modeling of Shallow-Water Target Scattering

The goal of this three-year effort is to develop a state-of-the-art, high-fidelity, finite-element, broadband computer simulation capability for modeling the scattering of sonar signals by undersea mines located in or near the seabed in littoral environments with smooth or rippled water/sediment interfaces. The target models will include all internal and external structural details that signifi...

Ship Hull Hydrodynamic Analysis Using Distributed Shared Memory

In this article we present the results obtained from the execution of a commercial Computational Fluid Dynamics program on a cluster of personal computers. The communication and data interchange between the nodes uses a Distributed Shared Memory (DSM) system called TreadMarks. The parallelized program was run on a 100Mbit/s Ethernet network connecting 4 personal computers. Using data similar to...

Simulation based design for high speed sea lift with waterjets by high fidelity urans approach

Geoacoustic inversion of ship radiated noise in shallow water using data from a single hydrophone.

The Centre for Maritime Research and Experimentation conducted a geoacoustic inverse experiment in the Mediterranean Sea in the summer of 2012. Among the objectives was to employ an autonomous underwater vehicle to collect acoustic data to invert for properties of the seafloor. Inversion results for the compression wave speed in the bottom and the source spectrum of the R/V Alliance during a cl...

Numerical Estimation of Shallow Water Resistance of a River-Sea Ship using CFD

In recent years a great deal of research efforts in ship hydromechanics have been devoted to practical navigation problems in moving larger ships safely into existing harbours and inland waterways and to ease congestion in existing shipping routes. The starting point of any navigational or design analysis lies in the accurate determination of the hydrodynamic forces generated on the ship hull m...