marine & off-shore

Hull surface modification for ship resistance performance optimization based on delaunay triangulation

The hull surface modification method plays a vital role in ship hydrodynamic performance optimization, and should meet the following requirements:in order to save optimization time, hull surface modification should be achieved using few design parameters; the modification range of the hull form should be sufficiently large; the local modified hull surface should have a fairing connection with other parts of the hull surface; the optimal hull form should be suitable for applying to manufacturing.

Changing Tack: Moving to Collaborative, Simulation-Led Engineering

Imagine if you could examine dozens, hundreds,thousands of design alternatives before committing to a single component. If you could understand the tradeoffs you’re making between weight, shape and capacity? How each decision affects the system’s reliability, cost or other attribute?

Multi-objective Optimization of A-Class Catamaran Foils Adopting a Geometric Parameterization Based on RBF Mesh Morphing

The design of sailing boats appendages requires taking in consideration a large amount of design variables and diverse sailing conditions. The operative conditions of dagger boards depend on the equilibrium of the forces and moments acting on the system. This equilibrium has to be considered when designing modern fast foiling catamarans, where the appendages accomplish both the tasks of lifting up the boat and to make possible the upwind sailing by balancing the sail side force. In this scenario, the foil performing in all conditions has to be defined as a trade-off among contrasting needs.

Sensitivity analysis of the dynamic response of an electronic fuel injector regarding fuel properties and operating conditions

Electronic fuel injectors play an indispensable role in High Pressure Common Rail (HPCR) fuel injection systems and interest numerous researchers to improve their performance. This paper investigates the sensitivity of three fuel properties (the fuel density, bulk modulus and absolute viscosity) to the valve opening/closing delay and the valve opening/closing time.​

Optimization of a Brazilian FPSO Fuel Consumption for Petroleum Composition with Maximum Oil and Gas Content Using Genetic Algorithm Method

Considering the relevance of the FPSO (Floating, Production, Storage and Offloading) for Brazilian petroleum market, the main goal of this project is to provide an optimization procedure on Primary Petroleum Platform operating under maximum oil/gas composition of the crude oil configuration, based on coupling of thermodynamic modeling and optimization method. 

Design of ducted propeller nozzles through a RANSE-based optimization approach

Marine propellers design requirements are always more pressing and the application of unusual propulsive configurations, like ducted propellers with decelerating nozzles, may represent a valuable alternative to fulfill stringent design constraints. This study proposes an optimization approach for the design of the accelerating
and decelerating nozzles for ducted propeller applications.

Design and analysis of a new generation of CLT propellers

The researchers of University of Genoa, in collaboration with SISTEMAR SA, proposed a study to design and analyze a tip loaded propellers to improve full-scale propeller efficiency (lower fuel consumptions and lower emission levels to comply with environmental pollution regulations). The modified tip loaded propeller (a mix between a tip rake and a contracted and tip loaded propeller) is designed via an optimization strategy using a Boundary Elements Method (BEM), a custom parametric description of the unconventional blade geometry and an optimization algorithm within the modeFRONTIER environment.

ESTECO webinar recording | Reliability based robust design optimization of a free-fall-life-boat

The webinar focuses on a reliability-based optimization method to statistically increase the safety of free fall lifeboats, which are typically used to evacuate passengers in oil platforms and large transport vessels.

Innovations in a floating production system for optimizing costs

An optimization process using modeFRONTIER is implemented with the aim of optimizing the design of a floating production system with the minimization of installation and operating cost in mind. The hull form was designed using a genetic algorithm, taking into account 7 parameters, and focusing on minimizing steel weight.

Study of the impact of structural parameters on the dynamic response of an electronic fuel injector

The study concentrates on the effects of structural parameters of an electronic fuel injector on its dynamic response. The injector was developed for a marine medium-speed diesel engine. The dynamic response from the start of the control signal to the end of the needle valve closing was investigated. Firstly, a complete and detailed model of the electronic fuel injector was built and integrated into an optimization model, where a MOGA was applied.