Publicado 6 números por año
ISSN Imprimir: 1948-2590
ISSN En Línea: 1948-2604
METHOD OF ENGINEERING CALCULATIONS OF ACOUSTIC AND THRUST CHARACTERISTICS OF NOISE-SUPPRESSING NOZZLES
SINOPSIS
The numerical methodology of approximate calculations of thrust and acoustic characteristics of nozzles with complex geometry is described. It includes (i) calculation of the time-averaged flow field around the nozzle based on Reynolds-averaged Navier-Stokes equations, (ii) simulation of acoustic perturbations propagation over the time-averaged flow field in the nozzle near field, and (iii) estimation of the far sound field and third-octave spectra of sound radiation in several directions. The results of the time-averaged flow field and thrust coefficient calculation for the sector nozzle are presented. Methodical calculations of the nozzle sound field are considered.