Department of Defense
High Performance Computing Modernization Program

Instantaneous temperature field for a heated supersonic over-expanded jet issued from a jet nozzle

The High Performance Computing Modernization Program (HPCMP) Challenge Project, a component of Naval Air Systems Command (NAVAIR) Propulsion’s Program, addresses requirement for High Performance Tactical Aircraft Exhaust Jet Noise Reduction. Extreme noise from military aircraft leads to the study of jet aeroacoustics and control through various nozzle designs; however, experiments required for each variation of nozzle geometry are cost-prohibitive. HPCMP Resources are being used to predict jet flow and resulting noise for complex nozzles using computational design tools. HPCMP resources enabled:

  • Simulations of complex nozzle geometries requiring >50x106 grid points
  • Accurate prediction of all details of noise generation and propagation
  • LES provides access to the complete transient flow field, allowing in-depth probing of the physics of jet noise production
  • Evaluation of thrust and performance estimates
  • Reduction of dependence on experiments for nozzle design studies

Read the full paper – Massively-Parallel Simulations of Supersonic Jet Noise from Complex Nozzle [PDF Version]