Publication de 6 numéros par an
ISSN Imprimer: 1948-2590
ISSN En ligne: 1948-2604
HIGH-RESOLUTION RANS/ILES METHOD FOR COMPLEX TURBULENT JETS
RÉSUMÉ
The high-resolution Reynolds-averaged Navier−Stokes/implicit large eddy simulation (RANS/ILES) method has been applied to coupled flow calculations in the nozzles with different geometries and nozzle jets. Good agreement with the experiment was achieved in the turbulence and flow parameters for a subsonic jet. The sound pressure spectra satisfactorily fit the experiment data up to Sh = 4−6. The effect of the inlet temperature on the flow and turbulence parameters was investigated in a supersonic jet from a convergent/divergent (C/D) nozzle. The influence of aerodynamic chevrons on the flow and turbulence parameters in the nozzle jet of a bypass turbojet engine (TJE) was studied numerically. Installation calculations in the jet from bypass TJE nozzle were performed as well. The installation included a bypass nozzle, pylon, and wing with deflected flaps. The effect of the angle of attack on the jet flow from the TJE nozzle was investigated for the specified installation. The aforementioned calculations were performed on grids with 1-3.3 × 106 cells, providing sufficiently good agreement with the available experimental data in each case.