VERNENGO , Giuliano

The hydrodynamics performance of submerged and surface-piercing lifting bodies is analyzed by a potential flow model based on a Vortex Lattice Method (VLM). Such a numerical scheme, widely applied in aerodynamics, is particularly suitable to model the lifting effects thanks to the vortex distribution used to discretize the boundaries of the...

Techniques for shape representation and further modification of a hull surface definitely play a key role in both the design of new buildings and in the optimisation of the existing ones. The simplification of the methods is the goal to reach in order to create useful tools for real applications. A new approach for hull shape modification is...

The study focuses on the analysis of the added resistance of a catamaran advancing both in regular waves and in a seaway. The numerical simulation has been carried out within the framework of potential flow theory by using a three dimensional, linear, Rankine source-based Boundary Element Method (BEM) and a Near-Field approach based on pressure...

Modern paradigms to design complex engineering systems focus on interactive approaches able to simultaneously handle results from multidisciplinary applications. Keeping this in mind and considering that from a ship design perspective the definition of a hull shape is the first step of the whole design process, a reliable computer aided design...

A new integrated method for the preliminary design of a fleet of ships for a new trade is presented. Data from two apparently separate types of analysis, based on logistics and naval architecture, are merged within an integrated logistics-fleet design framework. The procedure carries out a preliminary screening of the design space based on...

A proper orthogonal decomposition (POD)-based method is proposed to reduce the dimensions of the design space for the shape optimisation of marine propellers. The effectiveness of the proposed approach is proven in the case of the INSEAN-E779A propeller, which blade shape is modified to maximise efficiency while reducing suction side...