Evaluation of Acoustic Frequency Methods Coupled to Blade Element Momentum Theory for the Prediction of Propeller Noise

It appears your Web browser is not configured to display PDF files. Download adobe Acrobat or click here to download the PDF file.

Click here to download the PDF file.

Creator: 

Kotwicz Herniczek, Mark

Date: 

2017

Abstract: 

The accuracy of several computationally-inexpensive acoustic frequency methods is evaluated across a range of propeller geometries and operational conditions. The acoustic models considered do not require chord-wise aerodynamic data and therefore do not need to be coupled to a panel or grid-based aerodynamic solver. Each implemented method is compared to fourteen test cases originating from nine separate published acoustic experiments. The experimental data considered encapsulates a range of propeller geometries, blade numbers, microphone locations, tip speeds, and forward Mach speeds. The implemented acoustic models demonstrate good agreement with the experimental data, particularly for the prediction of the maximum tonal noise for which the model based on Hanson's helicoidal surface theory of propellers has an average error of 7.2 dB. The presented results suggest that the implemented acoustic methods remain a valuable resource for propeller noise prediction, especially for design and optimization studies, where a low runtime is important.

Subject: 

Engineering - Aerospace

Language: 

English

Publisher: 

Carleton University

Thesis Degree Name: 

Master of Applied Science: 
M.App.Sc.

Thesis Degree Level: 

Master's

Thesis Degree Discipline: 

Engineering, Aerospace

Parent Collection: 

Theses and Dissertations

Items in CURVE are protected by copyright, with all rights reserved, unless otherwise indicated. They are made available with permission from the author(s).