Conference_programme: 4.2 - Aircraft/Helicopter Noise
Lecture: AN IMPROVED NOISE REDUCTION MODELLING APPROACH FOR WOVEN WIRE MESH SCREENS APPLIED TO AIRCRAFT LANDING GEARS
Author(s): Okolo Dr.Patrick , Paduano Dr.Cristina , Bennett Prof.Gareth
Summary:
Recent attempts have been aimed at the reduction of noise emissions from aircraft landing gears. These attempts have resulted in the application of low noise treatments on aircraft landing gears such as air curtains, porous fairings, woven wire mesh screens, etc. However, from a computational aeroacoustics (CAA) implementation point of view, the complex nature of landing gears often results in a highly expensive computational process, particularly when numerically simulating the effect of low noise treatments as add-ons within the landing gears. \n\nThis paper therefore presents a novel and less computational expensive method for numerically simulating the effect of a physical woven wire mesh screen upstream or wrapped around the complicated geometry of landing gears. Within this paper, an improved Volume Averaged Method (VAM) is employed within a CFD code for a half scale main landing gear and numerical results are validated with an EU project results: ALLEGRA. \n\nThe results comparison demonstrates potentials for future work within this application. This improved VAM approach is carried out by the inclusion of a turbulence suppression term specific to woven wire mesh screens within the original VAM methodology. Therefore, this paper aims to show that the implementation of this modified modelling approach for woven wire mesh screens presents a viable alternative to more expensive means of fully resolving the effect of woven wire mesh screens upstream or wrapped around landing gear models within a CFD flow domain.\n\n\n\n
Corresponding author
Name: Dr Cristina Paduano
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Country: Ireland
