Multidisciplinary Design Optimization of Transonic Fans for Small Turbofan Engines 1 An Integrated Cad-centric Approach for Transonic Fan Blade Design Saïma Naz, PhD student Alexandre Lupien, M.Sc.A student Supervised by Jean-Yves Trépanier, Chair holder Christophe Tribes, Research associate Eddy Petro, Research associate

Objectives  Improve current Fan Design Process  Develop a new Parametric Model  Accelerating the Design Cycle  Enhance the Performance  Explore and apply Efficient Optimization Technique 2 Fan Design  Challenging task  Careful and precise

Multi-Disciplinary Design Optimization  Engineering 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 3 Overall Design and Optimization Process

A New CAD-Centric Parametric Model  Current process (sequential) 4 AERODYNAMICS ROTATING STRUCTURES DYNAMICS COMPRESSOR DESIGN CAD CAD modif. requirements

A New CAD-Centric Parametric Model  CAD-Centric Model 5 CAD AERODYNAMICS ROTATING STRUCTURES DYNAMICS COMPRESSOR DESIGN CAD modif.

A New CAD-Centric Parametric Model  Good Parametric model needed –Global General design modif. –Precise Fine tuning –Flexible Complex 3D shapes 6

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