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fluid dynamics

  • Diesel fuel efficiency takes shape with optimization

    In the debate on how best to tackle the impact of vehicles on environment, the improvement of diesel engine efficiency has emerged as a transitory but effective solution, especially for heavy-duty vehicles and passenger cars. Researchers at the ISUZU Advanced Engineering Center (IAEC) have analyzed how to enhance fuel efficiency by modifying the shape of the diesel engine combustion chamber.​

    success story
  • Hydrodynamic Design of a Fast Semi-SWATH Passenger Ship for Littoral Applications: an Automatic Parametric Optimization Approach

    Semi-SWATH hull forms are a type of hybrid in that they combine the shape of a SWATH in the entrance body with a high-speed catamaran in the run body. The goal of this study is to shed light on the resistance and seakeeping properties of this type of unconventional hull form and to show which shape may be a more beneficial design.

    paper
  • Multi-Disciplinary Multi-Objective Optimization of Solid Fins for Sounding Rocket

    modeFRONTIER was employed to carry out the optimization of a fin on a sounding rocket. A sounding rocket, also referred to as a research rocket, is used to perform scientific experiments during its sub-orbital flight. Designing the fin results in a multi-disciplinary problem involving three main topics: aerodynamics, trajectory and structures with multiple conflicting objectives such as maximizing peak altitude, maximizing factor of safety and minimizing fin deformations.

    paper
  • Webinar | Aeroacoustic Optimization with PowerFLOW and modeFRONTIER at JLR

    ESTECO and Exa Corporation experts speak about the improvement of a side mirror aeroacoustic performance through PowerFLOW CFD simulation and modeFRONTIER optimization analysis.

    webinar
  • A Study on Reduction of Heat Loss by Optimizing Combustion Chamber Shape

    A method to improve fuel consumption in diesel engines is to enhance their theoretical thermal efficiency by increasing their compression ratio. In this case, reducing heat loss to the chamber wall is important to effectively benefit from a high compression ratio. To meet this challenge the combustion chamber shape was optimized using CONVERGE and modeFRONTIER. 

    paper
  • A New Automated Underhood Thermal Management CFD DoE Workflow with ModeFRONTIER

    Ford engineers are challenged to find a cost efficient cooling system concept for the underhood thermal management that suits different powertrains and environments, respecting standards (NACA duct) and without compromising the vehicle’s aerodynamic performance. From a thermodynamics perspective, the problem to address regards the high temperatures deriving from the friction inside the PTU (Power Take-off Unit) and surrounding parts which can cause the oil to overheat.

    proceeding
  • ECS System Simulation - Architecture and Performance Optimization from the Early Phases of the System Design

    This case study from Alenia Aermacchi’s Environmental Control System (ECS) department shows how the different design disciplines involved are handled effectively through process integration and automation, enabling the optimization of the overall performance from the early stages of system design.

    success story
  • CFD-Based Optimization Methods Applied to Polymer Die Design

    Researchers explored the potential of CFD associated to RSM and optimization techniques in the design processes of the chemical industry. Two polymer die design examples were explored using different slot die geometries, different CFD codes, and different optimization packages and methods.

    paper
  • Front Shape and Slipstream for Wide Body Trains at Higher Speeds

    Study the slipstream air speeds of wide body Bombardier trains at high speeds so that designers can meet the various requirements for front end shapes and develop a prediction methodology. An efficient optimization methodology implemented in modeFRONTIER helped optimize the performance and take all constraints into account early in the design cycle saving time and cost.

    paper
  • Design by Optimization of a Controllable Pitch Marine Propeller

    Cavitation, or boiling, is a result of low pressure and flow speed rather than high temperature in water. The higher the speed of a propeller, the lower the pressure in water and therefore the higher levels of cavitation. Researches wish to design a propeller that delivers the same thrust (both at the design and at the reduced pitch working points) in order to reduce the cavitation phenomena and, consequently, the resultant radiated noise. 

    paper

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