Determination of angle of propagation of acoustic radiation in the far field from turbofan inlet using ray acoustics

Author

Konanur Vishweshwara

Abstract

"The present study uses the method of ray acoustics to predict the principal direction in which acoustic energy is radiated in hydrodynamic far fields from turbofan inlets. Acoustic rays are traced from the inlet to the hydrodynamic far field (distances beyond which inlet flow characteristics become insignificant). The direction of the principal lobe of acoustic radiation associated with a specified spinning mode, for non-uniform velocity fields associated with inlet flows, is approximated by the direction of the group velocity vector of the mode propagating in the duct. Rays in the far field are in the direction of the far field group velocity, and hence in the principal direction of energy radiation. During the current study a substantial effort is made to develop and implement the ray acoustics methodology"--Abstract, page ii.

Advisor(s)

Eversman, Walter

Committee Member(s)

Barker, Clark R.
Patel, J.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Publisher

University of Missouri--Rolla

Publication Date

1984

Pagination

vi, 87 pages

Rights

© 1984 Konanur Vishweshwara, All rights reserved.

Document Type

Thesis - Citation

File Type

text

Language

English

Subject Headings

Sound -- Transmission
Electromagnetic fields
Antenna radiation patterns

Thesis Number

T 5113

Print OCLC #

11299489

Link to Catalog Record

Full-text not available: Request this publication directly from Missouri S&T Library or contact your local library.

Recommended Citation

Vishweshwara, Konanur, "Determination of angle of propagation of acoustic radiation in the far field from turbofan inlet using ray acoustics" (1984). Masters Theses. 4538.
https://scholarsmine.mst.edu/masters_theses/4538