Multidisciplinary Design Optimization of Transonic Fans for Small Turbofan Engines

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Multidisciplinary Design Optimization of Transonic Fans for Small Turbofan Engines

An Integrated Cad-centric Approach for Transonic Fan Blade Design

Saïma Naz, PhD student

Alexandre Lupien, M.Sc.A student

Supervised byJean-Yves Trépanier, Chair holder

Christophe Tribes, Research associateEddy Petro, Research associate

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Objectives Improve current Fan Design Process

Develop a new Parametric Model

Accelerating the Design Cycle

Enhance the Performance

Explore and apply Efficient Optimization Technique

Fan Design Challenging task

Careful and precise

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Multi-Disciplinary Design OptimizationEngineering optimization method to solve design problems incorporating a number of disciplines.

Not limited to Aero and Thermodynamic performance, Also involves:

Geometrical requirements

Mechanical integrity

Life cycle & Manufacturing costs

Product cycle time

Weight, Emissions and Heat transfer

Overall Design and Optimization Process

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A New CAD-Centric Parametric Model

Current process (sequential)

AERODYNAMICS ROTATING STRUCTURES DYNAMICS COMPRESSOR

DESIGN

CADCADCAD

CAD modif. requirements

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A New CAD-Centric Parametric Model

CAD-Centric Model

CADAERODYNAMICS

ROTATING STRUCTURES

DYNAMICS

COMPRESSORDESIGN

CAD modif. CAD modif.

CAD modif.

CAD modif.

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A New CAD-Centric Parametric Model

Good Parametric model needed– Global

• General design modif.– Precise

• Fine tuning– Flexible

• Complex 3D shapes

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Merci