BC-Int · Contact-induced blade-casing interactions in aero-engine turbines - An integrated simulation framework for local and global nonlinearities

Contact-induced blade-casing interactions in aero-engine turbines - An integrated simulation framework for local and global nonlinearities

The project was aligned with the Strategic Research and Innovation Agenda (SRIA) developed by Advisory Council for Aviation R&I in Europe (ACARE), more specifically with the 3rd FLIGHTPATH 2050 goal, ‘Maintaining and extending industrial leadership’, contributing to streamlining systems design process able to address the complexity and decrease development costs. Its specific goal was to provide an accurate and efficient numerical tool to predict the critical engine configuration to avoid unforeseen and harmful interactions between rotating and static parts. This numerical tool enables the design of more efficient engines by decreasing flow leakage. To provide an accurate model, a geometrically nonlinear model of the rotating blades having interaction with the casing has to be considered. The analysis of such a model dealing simultaneously with both contact and geometric nonlinearities can be handled efficiently only using reduced-order models. So one main goal was to develop an accurate reduced model capable of predicting the nonlinear behavior of structure due to blade casing interaction. Experimental analysis was considered to validate the model and ensure its accuracy. Then this model has to be used to propose design guidelines by improving the understanding of the physical phenomena. In addition, reaching these technical goals ensures a considerable improvement in the skills of the researcher. Also, it provides new modeling and experimental capabilities in the portfolio of the host organization.

Data: CORDIS, © European Union