fluid dynamics

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.

Optimization of air distribution mode coupled interior design for civil aircraft cabin

The airflow distribution and thermal comfort of human beings in civil aircraft cabin are influenced by many factors such as the ventilation mode, ventilation air volume, and supply air temperature and so on. Among these factors, the choice of ventilation mode in the civil aircraft cabin is also restricted by the interior and aesthetic designs.

Aerodynamic Design Best Practices Using PowerFlow and modeFRONTIER optimization

The best practices developed by Exa and ESTECO ensure accurate simulation results and a streamlined process for vehicle design optimization

Figure 1. Regions of design morphs and related flow features

Optimization of a double sided centrifugal pump

Centrifugal pumps are widely used in industrial applications. Compared to single-entry centrifugal pumps, double-sided pumps allow transportation of greater flow rates due to smaller proneness to cavitation, and offer counter-balancing of axial hydraulic forces due to double-entry design. In turbomachines, usually multiple objectives have to be optimized.​​

Bladelets Winglets on Blades of Wind Turbines A Multiobjective Design Optimization Study

Although much work has been reported on design of winglets on airplane wings, , the volume of published efforts to design bladelets (winglets at the tips of the wind turbine blades) for rotating lifting surfaces is still very limited. This work investigated the effectiveness of bladelets on the tips of wind turbines on increasing wind turbine rotor power output.​

Innovative Computer Aided Solidification Technology

ERGOLINES and ESTECO teamed up to elaborate this new technology for 'assisted solidification' of steel to improve further the quality of the final product. The goal is to optimize the stirrer parameters and reduce internal and surface defects, increase product homogeneity and minimize energy consumption.

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.

Performance of different optimization concepts for reactive flow systems based on combined CFD and response surface methods

Optimization of reactive flow systems, e.g. coal and biomass combustion, gasification or partial oxidation, is usually a multi-parameter problem, while geometry configurations (e.g. reactor dimensions, burner dimensions) and operating conditions (e.g. fuel mass flow, reactor temperature, cooling capability) mainly determine the process efficiency and profitability. 

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.