Sound suppression of laminar separating flow over cavity

Seiichiro Izawa; Hiroshi Maita; Osamu Terashima; Ao Kui Xiong; Yu Fukunishi

doi:10.1299/jsmeb.49.1092

Sound suppression of laminar separating flow over cavity

Seiichiro Izawa^*, Hiroshi Maita, Osamu Terashima, Ao Kui Xiong, Yu Fukunishi

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

A passive control of aerodynamic noise generated by a laminar separating flow over a cavity is carried out in a wind tunnel test and by numerical simulation, using a thin plate inserted into the cavity as a passive flow-controlling device. In the experiment, a noise suppression effect up to 14 dB is achieved by placing a plate in a proper location. It is shown that a plate of smaller vertical size is more effective. In the numerical simulation, it is shown that the location where the shear layer rolls up and the path of vortices are both very sensitive to plate position.

Original language	English
Pages (from-to)	1092-1097
Number of pages	6
Journal	JSME International Journal, Series B: Fluids and Thermal Engineering
Volume	49
Issue number	4
DOIs	https://doi.org/10.1299/jsmeb.49.1092
State	Published - 2007/05/21

Keywords

Cavity noise
Flow control
Noise suppression
Plate
Vortex

ASJC Scopus subject areas

Mechanical Engineering
Physical and Theoretical Chemistry
Fluid Flow and Transfer Processes

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10.1299/jsmeb.49.1092

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title = "Sound suppression of laminar separating flow over cavity",

abstract = "A passive control of aerodynamic noise generated by a laminar separating flow over a cavity is carried out in a wind tunnel test and by numerical simulation, using a thin plate inserted into the cavity as a passive flow-controlling device. In the experiment, a noise suppression effect up to 14 dB is achieved by placing a plate in a proper location. It is shown that a plate of smaller vertical size is more effective. In the numerical simulation, it is shown that the location where the shear layer rolls up and the path of vortices are both very sensitive to plate position.",

keywords = "Cavity noise, Flow control, Noise suppression, Plate, Vortex",

author = "Seiichiro Izawa and Hiroshi Maita and Osamu Terashima and Xiong, {Ao Kui} and Yu Fukunishi",

year = "2007",

month = may,

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doi = "10.1299/jsmeb.49.1092",

language = "英語",

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T1 - Sound suppression of laminar separating flow over cavity

AU - Izawa, Seiichiro

AU - Maita, Hiroshi

AU - Terashima, Osamu

AU - Xiong, Ao Kui

AU - Fukunishi, Yu

PY - 2007/5/21

Y1 - 2007/5/21

N2 - A passive control of aerodynamic noise generated by a laminar separating flow over a cavity is carried out in a wind tunnel test and by numerical simulation, using a thin plate inserted into the cavity as a passive flow-controlling device. In the experiment, a noise suppression effect up to 14 dB is achieved by placing a plate in a proper location. It is shown that a plate of smaller vertical size is more effective. In the numerical simulation, it is shown that the location where the shear layer rolls up and the path of vortices are both very sensitive to plate position.

AB - A passive control of aerodynamic noise generated by a laminar separating flow over a cavity is carried out in a wind tunnel test and by numerical simulation, using a thin plate inserted into the cavity as a passive flow-controlling device. In the experiment, a noise suppression effect up to 14 dB is achieved by placing a plate in a proper location. It is shown that a plate of smaller vertical size is more effective. In the numerical simulation, it is shown that the location where the shear layer rolls up and the path of vortices are both very sensitive to plate position.

KW - Cavity noise

KW - Flow control

KW - Noise suppression

KW - Plate

KW - Vortex

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DO - 10.1299/jsmeb.49.1092

M3 - 学術論文

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SP - 1092

EP - 1097

JO - JSME International Journal, Series B: Fluids and Thermal Engineering

JF - JSME International Journal, Series B: Fluids and Thermal Engineering

IS - 4

ER -

Sound suppression of laminar separating flow over cavity

Abstract

Keywords

ASJC Scopus subject areas

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