The choice of turbulence model can have a strong impact on results for many
turbomachinery zones. Palliative corrections to them and also transition modeling can have …

General forms of turbulence models are outlined along with their defects and palliatives for
these in relation to turbomachinery. The turbulence modelling hierarchy available in …

Several articles in the open literature document previous efforts to measure turbulent jets.
Most were acquired in cold, low speed jets, often using hotwire anemometry, although some …

Many tasks in fluids engineering require prediction of turbulence of jet flows. The present
document documents the single-point statistics of velocity, mean and variance, of cold and …

JET mixing noise continues to be the main contributor to overall aircraft noise on takeoff,
despite significant increases in engine bypass ratios. The development of effective mixing …

Two isothermal round jets at a Mach number of 0.9 and a diameter-based Reynolds number
of 2× 10 5 have been computed by compressible large-eddy simulation using high-order …

Using large-eddy simulation–Reynolds-averaged Navier–Stokes (LES–RANS), this paper
studies a round coaxial nozzle with an ultra-high bypass ratio of 15, with and without a wing …

Space–time correlation characteristics of jets operated over a wide range of jet velocities are
investigated in this study, in order to gain insights into the physical mechanisms that lead to …

THE coaxial jet with normal velocity profile hasflow features that can be controlled to reduce
sound in azimuthal directions of relevance to aircraft noise. To appreciate these features, let …

TYPICAL aeroacoustic problems are bedeviled at several levels. First, thefluidflow
generating the acousticfield is turbulent, and the flow and its associated sound are …