*Current turbomachinery design and analysis is a time consuming process, including multiple teams and physics to consider during the design stages. The geometry definition is a key enabler for better component, subsystem and system level design which needs to be clean and flexible at an appropriate level of fidelity for all simulation and analysis involved in the design process. In order to achieve this, a fully parametric approach has been developed using a feature library (user defined features – UDFs) in a commercial software package together with multiple tools to clean, heal, tag and prepare the geometry for analysis. This approach enables the simulation and analysis community to quickly generate high quality CAD models in 3D for a variety of multi-physical analyses in 3D but also in 2D, if needed, all based on a single master geometry description.*

 

*The paper will describe the approach taken to create the feature based parametric library for a whole aero engine application, the relevant steps and tools to prepare the geometry for analysis, and the current limitations of this approach. The benefits will be discussed using key business performance indicators such as engineering technical time-saving and product quality improvements.*

 

*The new geometry library has been used to enable a new aero engine conceptual design from the whole engine aerodynamic gas path definition all the way to the structural design, providing the additional flexibility to perform trade-off studies through design of experiments (DOE). Results will be shown on variation of critical design parameters such as casing thicknesses, flange positions onto resulting mount loads, mass, deformations and rotor/casing tip clearances.*

 

*The selected example will clearly demonstrate the time-saving achieved compared to the traditional process, and the ability of the engineer to explore the design space better with inter-linked analysis tools through a master geometry definition.*

Keywords: Turbomachinery, Design of Experiments (DoE), User Defined Features (UDFs), Aerodynamic gas path definition


Novel Feature Based Approach for Turbomachinery Design and Analysis

Division / Sponsor:
International Gas Turbine Institute (IGTI)

Paper Proceedings: https://asmedigitalcollection.asme.org/GT/GT2020/volume/84058

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