On the Determination of Shadow Boundaries and Relevant Eigenrays For Sound Propagation In Stratified Moving Media

Mcaninch, G. L.; Heath, Stephanie L.

doi:10.2514/6.2006-412

Search citation statements

Order By: Relevance

Paper Sections

Select...

Introduction1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2014

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Today, most state-ofthe-art propagation modelling tools in practical use are based on acoustic ray tracing , e.g. [1] to [3]. These methods are capable of computing the sound wave propagation from source to observer, with incorporation of locally varying (but time-averaged) atmospheric conditions.…”

Section: Introductionmentioning

confidence: 99%

A Ray Acoustics Model for the Propagation of Aircraft Noise through the Atmosphere

Brouwer

2014

International Journal of Aeroacoustics

View full text Add to dashboard Cite

A ray-tracing tool, called RAYTRAC, has been developed to compute the propagation of aircraft noise through a stratified atmosphere. The mathematical model on which RAYTRAC is based is derived from first principles, i.e. the linearized Euler equations for a non-uniform atmosphere. The main result of the model consists of two equations:one for the location of the rays and one for the change in amplitude along each ray. An analysis of these equations is given with respect to their possible solutions under various atmospheric circumstances. Also an efficient iteration procedure is presented that finds the ray connecting the source and a specific observer point. It is shown how multiple rays can be added, with incorporation of a reflecting surface. Finally, the tool is demonstrated by application to two examples that are representative for an aircraft emitting sound to an observer on the ground.

show abstract

Section: Introductionmentioning

confidence: 99%

A Ray Acoustics Model for the Propagation of Aircraft Noise through the Atmosphere

Brouwer

2014

International Journal of Aeroacoustics

View full text Add to dashboard Cite

show abstract

On the Determination of Shadow Boundaries and Relevant Eigenrays For Sound Propagation In Stratified Moving Media

Cited by 1 publication

References 2 publications

A Ray Acoustics Model for the Propagation of Aircraft Noise through the Atmosphere

A Ray Acoustics Model for the Propagation of Aircraft Noise through the Atmosphere

Contact Info

Product

Resources

About