Distribution of Acoustic Power Spectra for an Isolated Helicopter Fuselage

Kusyumov, A.N., Mikhailov, S.A., Garipova, L.I., Batrakov, A.S. and Barakos, G. (2016) Distribution of Acoustic Power Spectra for an Isolated Helicopter Fuselage. EPJ Web of Conferences, 114, 02062. (doi: 10.1051/epjconf/201611402062)

Abstract

The broadband aerodynamic noise can be studied, assuming isotropic flow, turbulence and decay. Proudman’s approach allows practical calculations of noise based on CFD solutions of RANS or URANS equations at the stage of post processing and analysis of the solution. Another aspect is the broadband acoustic spectrum and the distribution of acoustic power over a range of frequencies. The acoustic energy spectrum distribution in isotropic turbulence is non monotonic and has a maximum at a certain value of Strouhal number. In the present work the value of acoustic power peak frequency is determined using a prescribed form of acoustic energy spectrum distribution presented in papers by S. Sarkar and M. Y. Hussaini and by G. M. Lilley. CFD modelling of the flow around isolated helicopter fuselage model was considered using the HMB CFD code and the RANS equations.

• Item Type: Articles
• Additional Information: This work is supported by the "Project part of state task in the field of the scientific activity" Grant (No 9.1694.2014/K).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Barakos, Professor George
• Authors: Kusyumov, A.N., Mikhailov, S.A., Garipova, L.I., Batrakov, A.S., and Barakos, G.
• College/School: College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
• Journal Name: EPJ Web of Conferences
• Publisher: EDP Sciences
• ISSN: 2100-014X
• ISSN (Online): 2100-014X
• Published Online: 28 March 2016
• Copyright Holders: Copyright © 2016 The Authors
• First Published: First published in EPJ Web of Conferences 114: 02062
• Publisher Policy: Reproduced under a Creative Commons License