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Computation of Aerodynamic Noise Radiated from Ducted Tail Rotor Using Boundary Element Method
Joint Authors
Huang, Jun
Ma, Yunpeng
Yi, Mingxu
Wang, Lifeng
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-01-03
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
A detailed aerodynamic performance of a ducted tail rotor in hover has been numerically studied using CFD technique.
The general governing equations of turbulent flow around ducted tail rotor are given and directly solved by using finite volume discretization and Runge-Kutta time integration.
The calculations of the lift characteristics of the ducted tail rotor can be obtained.
In order to predict the aerodynamic noise, a hybrid method combining computational aeroacoustic with boundary element method (BEM) has been proposed.
The computational steps include the following: firstly, the unsteady flow around rotor is calculated using the CFD method to get the noise source information; secondly, the radiate sound pressure is calculated using the acoustic analogy Curle equation in the frequency domain; lastly, the scattering effect of the duct wall on the propagation of the sound wave is presented using an acoustic thin-body BEM.
The aerodynamic results and the calculated sound pressure levels are compared with the known technique for validation.
The sound pressure directivity and scattering effect are shown to demonstrate the validity and applicability of the method.
American Psychological Association (APA)
Ma, Yunpeng& Yi, Mingxu& Wang, Lifeng& Huang, Jun. 2017. Computation of Aerodynamic Noise Radiated from Ducted Tail Rotor Using Boundary Element Method. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1190779
Modern Language Association (MLA)
Ma, Yunpeng…[et al.]. Computation of Aerodynamic Noise Radiated from Ducted Tail Rotor Using Boundary Element Method. Mathematical Problems in Engineering No. 2017 (2017), pp.1-13.
https://search.emarefa.net/detail/BIM-1190779
American Medical Association (AMA)
Ma, Yunpeng& Yi, Mingxu& Wang, Lifeng& Huang, Jun. Computation of Aerodynamic Noise Radiated from Ducted Tail Rotor Using Boundary Element Method. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1190779
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1190779