Sentence examples for indirect noise from inspiring English sources

Analytical and numerical assessments of the indirect noise generated through a nozzle are presented.

The contribution of indirect noise to the overall noise is shown to be non-negligible either in subsonic or sonic throat conditions.

This work presents the first measurements which clearly separate the direct and indirect noise contributions to pressure fluctuations upstream of the acceleration point.

The complete analytical model reveals a good agreement with 2D simulations, which allows the prediction and minimization of both direct and indirect noise at the design-stage without computation.

The hot spots are then advected with the mean flow and finally accelerated through an orifice plate located at the end of the tube, producing a strong acoustic signature which propagates upstream (indirect noise).

The setup mimics the direct and indirect noise contributions to the acoustic pressure field in a confined combustion chamber by producing synchronized acoustic and temperature fluctuations, without dealing with the complexity of the combustion process.

Indirect combustion noise is believed to be a key component of turbofan engine core noise, but existing experimental data have not been able to definitively determine its importance.

The present work focuses on indirect combustion noise.

Indirect combustion noise has now been found in laboratory experiments.

This makes the identification of indirect combustion noise a formidable task.

Accordingly, a theoretical model study of the generation of indirect combustion noise in an Auxiliary Power Unit (APU) is carried out.