Turbulent Mixing Noise from Jet Exhaust Nozzles
|Title||Turbulent Mixing Noise from Jet Exhaust Nozzles|
|Publication Type||Conference Paper|
|Year of Publication||2012|
|Authors||Insley, JA, Paliath, U, Gupta, A|
|Conference Name||High Performance Computing Networking, Storage, and Analysis Companion|
|Conference Location||Seattle, Washington|
Understanding the complex turbulent mixing noise sources for jet exhaust nozzles is critical to delivering the next generation of "green" low-noise jet engines. High-performance computing resources are used to develop and prove hghi-fidelity direct-from-first-principles predictions of noise to characterize these hard-to-measure acoustic sources. A scalable, compressible Large Eddy Simulation (LES)-based Computational Aeroacoustics (CAA) solver is used to study free shear layer noise from jet exhaust nozzles, and boundary layer noise sources from airfoils. Representative wind turbine airfoils are simulated at realistic Reynolds & Mach numbers to mature CAA prediction accuracy. To prove design differentiation capability and hence readiness as an numerical rig ready to accelerate industrial design, the LES/large-scale HPC combination is being proven on a range of jet nozzle configurations.