The added resistance is a component that not yet satisfactorily predicted, although its accurate estimation crucial – both from an environmental and economic point of view the design stage ship until operation. One possible sources overprediction occurrence bow wave breaking. first aim this paper to study effect breaking on by combining visual observations with tests. On other hand, as region a...

Title of dissertation: Physics of Breaking Bow Waves: A Parametric Investigation using a 2D+T Wave Maker Eric Maxeiner, Doctor of Philosophy, 2009 Dissertation directed by: Professor James H. Duncan Department of Mechanical Engineering A mechanical 2-dimensional wave maker with a flexible surface was used to create waves similar to those formed at the bow of a moving ship. Utilizing the 2D+T ap...

With the rapid growth of global container trade volume and trend large-scale ships. The collection distribution port efficiency capacity terminals in various countries are facing huge challenges. Due to randomness most trucks entering port, often face problem traffic congestion caused by centralized arrival load operation yard equipment. Therefore, terminal operators urgently need manage optimi...

With advancements of quay side equipments and technologies, the bottleneck of port operations has moved from quay side to yard side. The yard management of a port has significant influences on the competitiveness of a port in the global shipping network. The research area of yard management has attracted a lot of attentions from both the academia and the industrial practitioners. This paper giv...

The container ship stowage planning problem (CSPP) is a very complex and challenging issue concerning the interests of shipping companies ports. This article has developed many-objective CSPP solution that optimizes stability reduces number shifts over whole route while at same time considering realistic constraints such as physical structure layout yard. Use initial metacentric height (GM) alo...

The yard operation plays an important role in the daily running of a container terminal. Whether the efficiency of a terminal can be improved depends to a significant extent on the operation of its container yard. In order to analyze the yard operation, this paper builds a 3D simulation model to simulate and visualize the yard operation in a container terminal. First, we study the characteristi...

The bubble sweep-down phenomenon around oceanographic research vessels generates acoustic disturbances. can be reproduced on a 1/30 scale ship model in wave and current circulating flume tank taking into account motions. Optical probe then used to measure locally the size velocity of bubbles generated by breaking waves. A comparison obtained results with more classical from detection image trac...

A model for simulating three dimensional polydisperse two-fluid open bubbly flows is presented. The polydisperse model is based on an integro-differential equation for the bubble size distribution function. A multigroup approach is used to discretize the equations in groups of constant mass. The resulting system has four scalar equations (mass and momentum) for the liquid phase and for each gro...