AEROSIMULAT · High-performance aerodynamics and aeroacoustics simulations of the new generation of high-speed gas turbines via high-order Galerkin methods
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2020-09-01 → 2023-08-31
- EU contribution
- €245,732
- Participants
- 2
- Scheme
- MSCA-IF
Lines connect the coordinator with its partners.
Results in brief
High-performance aerodynamics and aeroacoustics simulations of the new generation of high-speed gas turbines via high-order Galerkin methods
Jet noise has remained the dominant source of aircraft noise since jet airliners were introduced over half a century ago. Further reductions in jet noise are therefore needed to meet the ambitious noise reduction goals set forward by the EU in its “FlightPath 2050” report. This project addressed the above challenges by performing high-fidelity, massively parallel, aeroacoustic simulations of isolated and installed jets at realistic Reynolds and Mach numbers using the open-source spectral/hp element framework Nektar++. In particular, a discontinuous Galerkin method was used and the highest predicted frequency corresponded to a non-dimensional Strouhal number of 8. A Reynolds number of 500,000 and Mach number of 0.6 were considered along with different nozzle configurations. The simulation results were validated against experimental data obtained at the University of Southampton. In general, the near-field flow statistics obtained from the simulation were found to agree well with those obtained from experiments. In terms of far-field acoustics, the simulation correctly predicted the shape of the spectra and over-predicted noise levels by 1-2dB. This could be due to a small under prediction of the turbulence levels that was found at the nozzle exit.
Data: CORDIS, © European Union
Project objective
The main goal of this project is to perform efficient and accurate simulations of the turbulent compressible flow and generated noise on the new high-speed gas turbines at operation conditions, with the aim of supporting engineers in the design of efficient engines and effective noise reduction solutions. The main difficulty is to correctly simulate, in an acceptable wall- clock time, high Reynolds and high Mach numbers turbulent flows with important regions of separation and the different length scales and amplitudes among the acoustic and the flow fields.In this project we propose to tackle these problems by introducing high-order Galerkin methods and a skin friction boundary condition technique extended to compressible flows. Both techniques demonstrated impressive performance results on a different context. Given the fellow’s expertise in compressible flows, and her Third Country host’s expertise in high-order Galerkin methods, we are in a unique position to advance in the solution of this problem. A high performance computing simulation tool developed at the host institution will be used and developed as open source within this project. To go one step further within this interdisciplinary subject, we will establish a close collaboration with CTA, a company in the host country specialized in testing aerospace materials, where the fellow will spend one month of research. During this visit, the simulation results of their turbine prototypes will be analyzed and will be validated against their experimental data.The fellow will extend her network in the scientific and industrial communities. She will gain new managerial skills and a scientific maturity that will open her doors to obtain a strong research position in Europe. The host and the Third Country host supervisors will also benefit from the advances of this promising collaboration. The obtained results are expected to lead to further research and enhance the prospects of new projects.
Original text from CORDIS.
Participants
- BCAM - BASQUE CENTER FOR APPLIED MATHEMATICS · BilbaoCoordinatorSpain
- NEW JERSEY INSTITUTE OF TECHNOLOGY · Newark NjUnited States
Links
Data: CORDIS, © European Union