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TsAGI Science Journal

ISSN Druckformat: 1948-2590
ISSN Online: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.v41.i1.30
pages 15-33

METHOD OF ENGINEERING CALCULATIONS OF ACOUSTIC AND THRUST CHARACTERISTICS OF NOISE-SUPPRESSING NOZZLES

Sergey Mikhailovich Bosnyakov
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region, Russia
Vladimir Viktorovich Vlasenko
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region, Russia
A. V. Lysenkov
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region, Russia
Sergey Vladimirovich Mikhaylov
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region, Russia
Morozov Alexander
TsAGI

ABSTRAKT

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.


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