fluid dynamics

CFD optimization for GDI spray model tuning and enhancement of engine performance

Coupling a 3D Computational Fluid Dynamics (CFD) tool with a rigorous method of decision making is becoming indispensable in the design process of complex systems, as internal combustion engines. CFD based optimization (CFD-O) is here carried out on a single cylinder, four-valve, four-stroke gasoline direct injection (GDI) engine, to enhance mixture formation under stratified charge operation, hence to choose between the single or double injection strategy maximizing the engine power output.

Multi-objective Optimization of an America's Cup Class Yacht Bulb

modeFRONTIER genetic algorithms were used to define the best possible configuration of an America's Cup class yacht bulb, considering two different objectives and integrating multiple simulation tools, in order to obtain the minimum drag and the lowest center of gravity.

CFD Analysis for Offshore Systems: Validation and Applications

This work presents a collection of cases where CFD simulations were validated against experimental data and directly used to guide solutions for practical problems. Several headings were automatically simulated and evaluated against experimental data using modeFRONTIER.

CPP propeller cavitation and noise optimization at different pitches with panel code

In the present paper a multi-objective optimization, carried out in the framework of EU funded project SILENV—Ship-oriented Innovative solutions to reduce Noise & Vibrations, of an existing CPP propeller for a RO–RO ferry is presented.

Automated design and fabrication of micro-air vehicles

A methodology for an automated design and fabrication of micro-air vehicles (MAVs) is presented. A design optimization framework has been developed that interfaces several software systems to generate MAVs to optimally fulfil specific mission requirements. By means of a multi-objective genetic algorithm, families of MAVs are tailored with respect to objectives such as weight and endurance.

Flap Splitting and Setting of the X31 Wing

A common requirement for fighter planes is the ability to reach high roll angle accelerations, as this parameter is one of most important determinants of the plane's maneuverability. If a plane has two edge flaps on the wings, deflecting the two independently will cause a rolling moment to ensue, which in turn induces a roll acceleration.

Fluid-Structure Optimization of a Rectangular Wing

Over recent decades many new composites have been developed, some with very valuable properties. By carefully choosing the reinforcement, the matrix, and the manufacturing process that brings them together, engineers can tailor the properties to meet specific requirements. They can, for example, make the composite sheet very strong in one direction by aligning the fibres that way, but weaker in another direction where strength is not so important.