A two-dimensional solution of the FW-H equation for rectilinear motion of sources

Alireza Bozorgi; Leonidas Siozos-Rousoulis; Ahmad Nourbakhsh; Ghader Ghorbaniasl

doi:10.1016/j.jsv.2016.10.035

A two-dimensional solution of the FW-H equation for rectilinear motion of sources

Alireza Bozorgi, Leonidas Siozos-Rousoulis, Ahmad Nourbakhsh, Ghader Ghorbaniasl

Faculteit Ingenieurswetenschappen

Onderzoeksoutput: Article › peer review

9 Citaten (Scopus)

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In this paper, a subsonic solution of the two-dimensional Ffowcs Williams and Hawkings (FW-H) equation is presented for calculation of noise generated by sources moving with constant velocity in a medium at rest or in a moving medium. The solution is represented in the frequency domain and is valid for observers located far from the noise sources. In order to verify the validity of the derived formula, three test cases are considered, namely a monopole, a dipole, and a quadrupole source in a medium at rest or in motion. The calculated results well coincide with the analytical solutions, validating the applicability of the formula to rectilinear subsonic motion problems.

Originele taal-2	English
Pagina's (van-tot)	216-229
Aantal pagina's	14
Tijdschrift	JOURNAL OF SOUND AND VIBRATION
Volume	388
DOI's	https://doi.org/10.1016/j.jsv.2016.10.035
Status	Published - 3 feb. 2017

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10.1016/j.jsv.2016.10.035

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Permanente koppeling

FWOAL791: Quantificatie van onzekerheden voor robuust ontwerp met toepassingen in de aëroakoestiek
Contino, F. (Administrative Promotor) & Ghorbaniasl, G. (Co-Promoter)
1/01/16 → 31/12/19
Project: Fundamenteel
IWT664: Voorspelling van direct en verspreid geluidsveld van roterende machines
De Troyer, T. (Administrative Promotor), Ghorbaniasl, G. (Co-Promoter), Lacor, C. (Co-Promoter) & Siozos-Rousoulis, L. (Mandataris)
1/01/14 → 31/12/17
Project: Fundamenteel

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title = "A two-dimensional solution of the FW-H equation for rectilinear motion of sources",

abstract = "In this paper, a subsonic solution of the two-dimensional Ffowcs Williams and Hawkings (FW-H) equation is presented for calculation of noise generated by sources moving with constant velocity in a medium at rest or in a moving medium. The solution is represented in the frequency domain and is valid for observers located far from the noise sources. In order to verify the validity of the derived formula, three test cases are considered, namely a monopole, a dipole, and a quadrupole source in a medium at rest or in motion. The calculated results well coincide with the analytical solutions, validating the applicability of the formula to rectilinear subsonic motion problems.",

keywords = "FW-H equations, Far-field, Rectilinear subsonic motion, Frequency domain",

author = "Alireza Bozorgi and Leonidas Siozos-Rousoulis and Ahmad Nourbakhsh and Ghader Ghorbaniasl",

year = "2017",

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doi = "10.1016/j.jsv.2016.10.035",

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T1 - A two-dimensional solution of the FW-H equation for rectilinear motion of sources

AU - Bozorgi, Alireza

AU - Siozos-Rousoulis, Leonidas

AU - Nourbakhsh, Ahmad

AU - Ghorbaniasl, Ghader

PY - 2017/2/3

Y1 - 2017/2/3

N2 - In this paper, a subsonic solution of the two-dimensional Ffowcs Williams and Hawkings (FW-H) equation is presented for calculation of noise generated by sources moving with constant velocity in a medium at rest or in a moving medium. The solution is represented in the frequency domain and is valid for observers located far from the noise sources. In order to verify the validity of the derived formula, three test cases are considered, namely a monopole, a dipole, and a quadrupole source in a medium at rest or in motion. The calculated results well coincide with the analytical solutions, validating the applicability of the formula to rectilinear subsonic motion problems.

AB - In this paper, a subsonic solution of the two-dimensional Ffowcs Williams and Hawkings (FW-H) equation is presented for calculation of noise generated by sources moving with constant velocity in a medium at rest or in a moving medium. The solution is represented in the frequency domain and is valid for observers located far from the noise sources. In order to verify the validity of the derived formula, three test cases are considered, namely a monopole, a dipole, and a quadrupole source in a medium at rest or in motion. The calculated results well coincide with the analytical solutions, validating the applicability of the formula to rectilinear subsonic motion problems.

KW - FW-H equations

KW - Far-field

KW - Rectilinear subsonic motion

KW - Frequency domain

U2 - 10.1016/j.jsv.2016.10.035

DO - 10.1016/j.jsv.2016.10.035

M3 - Article

SN - 0022-460X

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EP - 229

JO - JOURNAL OF SOUND AND VIBRATION

JF - JOURNAL OF SOUND AND VIBRATION

ER -

A two-dimensional solution of the FW-H equation for rectilinear motion of sources

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Projecten

FWOAL791: Quantificatie van onzekerheden voor robuust ontwerp met toepassingen in de aëroakoestiek

IWT664: Voorspelling van direct en verspreid geluidsveld van roterende machines

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