CORNETProject reference: 686332
Funded under :
CORE NOISE ENGINE TECHNOLOGY
Total cost:EUR 997 772,25
EU contribution:EUR 997 772,25
Coordinated in:United Kingdom
Topic(s):JTI-CS2-2014-CFP01-ENG-03-02 - Advanced analytical tool for the understanding and the prediction of core noise for large civil aero engine with low emission core
Call for proposal:H2020-CS2-CFP01-2014-01See other projects for this call
Funding scheme:CS2-RIA - Research and Innovation action
Lean burn combustor technologies introduced to reduce NOx emissions are proving to be inherently noisier than conventional combustors, generating broadband noise that can be heard external to the aircraft. Without careful design and optimisation, there is a danger the low emission cores will cause the aircraft engines to exceed the Horizon 2020 noise requirement.
The research in the CORNET proposal is aimed at understanding the flow physics involved in the generation and propagation of core noise in low emission cores. It includes both the ‘direct noise’ of combustion, pressure waves generated directly by unsteadiness in the rate of combustion, and the ‘indirect noise’ generated as entropy waves accelerate through the Nozzle Guide Vanes (NGVs) at combustor exit and propagate through turbine blade rows.
Large Eddy Simulations of a combustor with a realistic engine fuel injector operating at representative engine conditions are validated through high-speed optical diagnostics applied to a high-pressure rig. The combustor modelling gives the entropy and acoustic waves incident on the NGVs. The generation of in-direct noise is predicted through unsteady high-resolution computations of the interaction of these entropy and acoustic waves within a high-pressure turbine stage. The new understanding will be captured in an advanced analytical combustion noise prediction tool that can be readily used by industry.
EU contribution: EUR 519 988,75
TRINITY LANE THE OLD SCHOOLS
CB2 1TN CAMBRIDGE
EU contribution: EUR 377 783,5
EU contribution: EUR 100 000