1996
DOI: 10.1121/1.415849
|View full text |Cite
|
Sign up to set email alerts
|

Reflection, radiation, and coupling of higher-order modes at discontinuities in finite-length rigid-walled rectangular ducts

Abstract: The effects of discontinuities on higher order modes is important in the design of passive and active noise control systems in ducts which operate near or above the cutoff frequency of the duct. Accurate acoustic monitoring of mechanical systems in ducts at frequencies near and above the cutoff frequency of the first mode must include the effects of discontinuities. This thesis examines the reflection, transmission, and coupling of higher order modes at discontinuities in finite length rigid walled rectangular… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
4
0

Year Published

2002
2002
2020
2020

Publication Types

Select...
5
1

Relationship

0
6

Authors

Journals

citations
Cited by 6 publications
(5 citation statements)
references
References 53 publications
0
4
0
Order By: Relevance
“…A radiation impedance matrix is first used to start the impedance transformation. The generalized modal radiation impedance matrix Z rad , which relates the modal sound-pressure vector P and particle velocity vector V on the radiating surface of a rectangular opening with the higher order modes, is given as follows [13]:…”
Section: Impedance Transformationmentioning
confidence: 99%
“…A radiation impedance matrix is first used to start the impedance transformation. The generalized modal radiation impedance matrix Z rad , which relates the modal sound-pressure vector P and particle velocity vector V on the radiating surface of a rectangular opening with the higher order modes, is given as follows [13]:…”
Section: Impedance Transformationmentioning
confidence: 99%
“…We would like to thank Yuhui Tong for an independent checking of Muehleisen's data (Ref. 6) against the data presented in this paper and experimental data by Shepherd and Cabelli (Ref. 5).…”
Section: Acknowledgmentsmentioning
confidence: 93%
“…In this paper, the number of modes was considered up to eight. Details of the calculation procedure are reported in [10,11] The boundary condition at the outlet of the oral tract waveguide needs to account for the presence of the face, so that the radiation impedance was computed assuming an infinite baffle [21]. The impedance at the inlet was set as the non-reflection boundary condition.…”
Section: Multimodal Modelingmentioning
confidence: 99%