Acoustic characteristics of the flow over different shapes of nozzle chevrons

Journal Title: INCAS BULLETIN - Year 2013, Vol 5, Issue 3

Abstract

The objective of this paper is to present a comparison between different types of chevrons and their influence on the acoustic power level radiated by the flow over them. The comparison was performed using a two-dimensional simulation of the flow over four different shapes of chevrons resulting propagation of the acoustic waves for each shape. Acoustic characteristics were revealed studying the main flow parameters (pressure, velocity, kinetic energy) in order to be able to discover the most efficient shape of chevron regarding the acoustic power level emitted.

Authors and Affiliations

Daniel CRUNTEANU, Petre-Claudiu COJAN

Keywords

Related Articles

Longitudinal Absolute Stability of a BWB Aircraft-Pilot System with Saturated Actuator Model

This paper deals with the analysis of the P(ilot) I(n-the-Loop) O(scillations) of the second category (with rate and position liming in the closed loop pilot-vehicle system), caused by the dynamic coupling between the hu...

The structural optimum design of laminated slender beam section with arbitrary material distribution using a genetic algorithm

In this paper, a study on optimum design methodology of a section structure of a composite material rotor blade using genetic algorithm is conducted, in order to calculate repetitive optimum design, analysis of strength,...

Similitude Criteria for Aeroelastic Models

This article presents principles of similarity modeling, dimensional analysis, and the Buckingham (Π) theorem. A number of examples from different fields are given. Based on these principles, the similar phenomena concep...

Tuning of a Wavelet Filter for Miniature Accelerometers Denoising based Joint Symbolic Dynamics (JSD) Method

The paper exposes a wavelet filtering mechanism related to the noise suppression in the acceleration sensors, with direct application in the strap-down inertial navigation systems. The presented procedure is related to t...

Cessna Citation X Business Aircraft Eigenvalue Stability– Part 1: a New GUI for the LFRs Generation

The aim of “Robustness Analysis” is to assess aircraft stability in the presence of all admissible uncertainties. Models that are able to describe the aircraft dynamics by taking into account all uncertainties over a reg...

Download PDF file
  • EP ID EP93485
  • DOI 10.13111/2066-8201.2013.5.3.6
  • Views 108
  • Downloads 0

How To Cite

Daniel CRUNTEANU, Petre-Claudiu COJAN (2013). Acoustic characteristics of the flow over different shapes of nozzle chevrons. INCAS BULLETIN, 5(3), 53-59. https://europub.co.uk/articles/-A-93485