fluid dynamics

The Product Innovative Design Methodology Integrating Reverse Engineering with Optimization - A Case Study on Automotive Styling

Although many CAD systems exist, in the initial design phase of a product, it’s still a challenge to obtain a shape that meets aesthetic and physical performance requirements simultaneously. An innovative design methodology integrating reverse engineering (RE) with optimization is presented to settle this problem. RE is used to convert a clay model to a spline-based surface model. The final solution is found through a multi-objective genetic algorithm from modeFRONTIER.

Sensitivity analysis of CFD method with modeFRONTIER

In this thesis, the development of a new defroster duct system prototype is carried out. The suitability of using modeFRONTIER for sensitivity analysis has been investigated coupling ANSYS/FLUENT as a main solver. To study the numerical solution of the windscreen de-icing process, a computational fluid dynamics (CFD) method has been used. 

Fuel Consumption Minimization Procedure of Sail-assisted Motor Vessel based on a Systematic Meshing of the Explored Area

This paper presents a complete route optimization procedure for sail-assisted motor vessel routing using deterministic medium range weather forecast and a parametric model of ship performances. A method for spatial and temporal generation of route variants based on a generic and automatic meshing method has shown optimal results. 

Optimization of a Wing-Sail shape for a small boat

The described optimization process is a very powerful instrument to investigate the influence of a wide range of geometrical parameters on wing-sail​ behavior. The analysis was conducted with the coupling of STAR-CCM+ and modeFRONTIER with the goal of increasing wingsail performance in a small boat.

Experimental Characterization of External Gear Machines with Profile Asymmetric Teeth

This paper describes the benefits of introducing gears with asymmetric teeth in EGMs, or external gear machines. The optimal profile of the gear is tested using a numerical optimization procedure run in modeFRONTIER and HYGESim with the following objective functions: delivery flow pulsations, internal pressure overshoots, localized cavitation effects and volumetric efficiency.

Optimal Design of a Centrifugal Compressor using CFD, Multiobjective Optimization and Response Surface Methodology

CHALLENGE -  CFD based optimization of turbomachinery requiring high accuracy is computationally time consuming and is incompatible with industrial applications. In order to perform optimization without losing accuracy variable reduction and response surface metamodels can be used.

A CFD-based multidisciplinary optimization of aeroelastic systems with coupled reliability constraints

Designing aeroelastic systems with maximum reliability is studied in this paper using an AGARD 445.6 aircraft wing. Applications of RBDO techniques with a multidisciplinary code coupling approach based on high-fidelity CAD, CFD and CSD softwares and fluidstructure interface is presented with the aim of constructing a fully automatic design framework for aeroelastic optimization problems.

Efficient Automatic Vehicle Shape Determination Using Neural Networks and Evolutionary Optimization

Improving the aerodynamic shape of a vehicle holds a large potential for cuts in emissions. This study attempts to optimize vehicle shape using neural networks and evolutionary optimization. modeFRONTIER was used on a simplified low-drag car model in a study of realistic changes of five design parameters.

Air Intake Manifold Design 1D-3D fluid-dynamic multi-objective engine performances optimization

This study aims to optimize an air intake manifold by adding 1D and 3D analysis to the optimization methodology in order to reach optimal geometry and performance. Torque and power performance is analyzed with a 1D Gt-Power model and the fluid-dynamic balance is performed with the CFX 3D fluid-dynamic code. modeFRONTIER was chosen to run the optimization process.

Method for estimating parameters of practical ship manoeuvring models based on the combination of RANSE computations and System Identification

A method for estimating parameters of practical ship maneuvering models based on the combination of RANSE computations and System Identification (SI) procedure is investigated. The test case is a rather slender twin screw and two rudders ship. The genetic algorithm MOGA-II available in modeFRONTIER was used for the optimization procedure.