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Two-dimensional model of low Mach number vortex sound generation in a lined duct
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10.1121/1.3192332
/content/asa/journal/jasa/126/3/10.1121/1.3192332
http://aip.metastore.ingenta.com/content/asa/journal/jasa/126/3/10.1121/1.3192332
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the vortex-lined duct system.

Image of FIG. 2.
FIG. 2.

Effects of pressure-releasing linings on vortex dynamics and sound generation under inviscid condition for and . (a) Vortex path, (b) longitudinal velocity, (c) transverse velocity, (d) longitudinal acceleration, (e) transverse acceleration, and (f) far field sound pressure. ——: , ; – – –: , ; –⋅–: , ; and –⋅⋅–: , .

Image of FIG. 3.
FIG. 3.

Effects of pressure-releasing linings on vortex dynamics and sound generation under inviscid condition for and . (a) Vortex path, (b) longitudinal velocity, (c) transverse velocity, (d) longitudinal acceleration, (e) transverse acceleration, and (f) far field sound pressure. ——: , ; – – –: , ; and –⋅–: , .

Image of FIG. 4.
FIG. 4.

Effects of on vortex dynamics and sound generation for , , , and . (a) Vortex path, (b) longitudinal velocity, (c) transverse velocity, (d) longitudinal acceleration, (e) transverse acceleration, and (f) far field sound pressure. ——: ; – – –: ; –⋅–: ; –⋅⋅–: ; and ⋯⋯⋯⋅: .

Image of FIG. 5.
FIG. 5.

Effects of on vortex dynamics and sound generation for , , and . (a) Vortex path, (b) longitudinal velocity, (c) transverse velocity, (d) longitudinal acceleration, (e) transverse acceleration, and (f) far field sound pressure. ——: , ; – – –: , ; and –⋅–: , .

Image of FIG. 6.
FIG. 6.

Far field sound pressure amplitude under different combinations of system parameters. (a) , , ●: ; ▼: ; ◼: ; ----: , , ; – – –: , , ; – – –: , , ; ⋯⋯⋯⋅: , , ; –⋅–: , , ; and –⋅⋅ –: , , . (b) , , ●: ; ▼: ; -----: , , ; ⋯⋯⋯⋅: , , ; –⋅–: , , ; and –⋅⋅–: , , . (c) , ●: , ; ▼: , . ----: , , , ; ⋯⋯⋯⋅: , , , ; –⋅–: , , , ; and –⋅⋅–: , , , . Closed symbols for ; open symbols for .

Image of FIG. 7.
FIG. 7.

Acoustical energy radiated per unit spanwise length under different combinations of system parameters. (a) , ; (b) , ; and (c) . Legends: same as those for Fig. 6.

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/content/asa/journal/jasa/126/3/10.1121/1.3192332
2009-09-01
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Two-dimensional model of low Mach number vortex sound generation in a lined duct
http://aip.metastore.ingenta.com/content/asa/journal/jasa/126/3/10.1121/1.3192332
10.1121/1.3192332
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