Abstract
A finite difference analysis method is developed to simulate outdoor sound propagation under the influence of inhomogeneous or unsteady meteorological conditions by applying the separable solution of aeroacoustics to the outdoor sound. It is verified that the perfectly reflecting boundary on ground surfaces and the nonreflective boundary to realize the sound transmission from finite domain to infinite domain virtually perform properly in the numerical analysis. Then the numerical analysis precisely simulated the advective effect of wind on sound propagation and the change of sound wavelength due to the difference of air temperature. Furthermore, a shadow zone of acoustic waves was identified from the computation of sound propagation with the nonuniform vertical distribution of wind flow.
| Original language | English |
|---|---|
| Pages (from-to) | 708-717 |
| Number of pages | 10 |
| Journal | Doboku Gakkai Ronbunshuu A |
| Volume | 65 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2009 |
| Externally published | Yes |
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Keywords
- Air temperature
- High accuracy prediction
- Outdoor sound
- Semi-infinite domain
- Wind
ASJC Scopus subject areas
- Civil and Structural Engineering
- Mechanics of Materials
- Mechanical Engineering
- Building and Construction
Cite this
Numerical analysis method for high-accuracy prediction of outdoor sound propagation under the influence of meteorological conditions. / Hiejima, Shinji; Mukai, Yasuhiko; Watanabe, Tadashi.
In: Doboku Gakkai Ronbunshuu A, Vol. 65, No. 3, 2009, p. 708-717.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Numerical analysis method for high-accuracy prediction of outdoor sound propagation under the influence of meteorological conditions
AU - Hiejima, Shinji
AU - Mukai, Yasuhiko
AU - Watanabe, Tadashi
PY - 2009
Y1 - 2009
N2 - A finite difference analysis method is developed to simulate outdoor sound propagation under the influence of inhomogeneous or unsteady meteorological conditions by applying the separable solution of aeroacoustics to the outdoor sound. It is verified that the perfectly reflecting boundary on ground surfaces and the nonreflective boundary to realize the sound transmission from finite domain to infinite domain virtually perform properly in the numerical analysis. Then the numerical analysis precisely simulated the advective effect of wind on sound propagation and the change of sound wavelength due to the difference of air temperature. Furthermore, a shadow zone of acoustic waves was identified from the computation of sound propagation with the nonuniform vertical distribution of wind flow.
AB - A finite difference analysis method is developed to simulate outdoor sound propagation under the influence of inhomogeneous or unsteady meteorological conditions by applying the separable solution of aeroacoustics to the outdoor sound. It is verified that the perfectly reflecting boundary on ground surfaces and the nonreflective boundary to realize the sound transmission from finite domain to infinite domain virtually perform properly in the numerical analysis. Then the numerical analysis precisely simulated the advective effect of wind on sound propagation and the change of sound wavelength due to the difference of air temperature. Furthermore, a shadow zone of acoustic waves was identified from the computation of sound propagation with the nonuniform vertical distribution of wind flow.
KW - Air temperature
KW - High accuracy prediction
KW - Outdoor sound
KW - Semi-infinite domain
KW - Wind
UR - http://www.scopus.com/inward/record.url?scp=79954446923&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79954446923&partnerID=8YFLogxK
U2 - 10.2208/jsceja.65.708
DO - 10.2208/jsceja.65.708
M3 - Article
AN - SCOPUS:79954446923
VL - 65
SP - 708
EP - 717
JO - Doboku Gakkai Ronbunshuu A
JF - Doboku Gakkai Ronbunshuu A
SN - 1880-6023
IS - 3
ER -