A Numerical Study on the Oscillating Flow Induced by an Acoustic Field around Coal Particles
In order to investigate the acoustically driven oscillating flow around coal particles in the power plant boiler, the two-dimensional, unsteady mass and momentum conservation equations for laminar flow in spherical coordinates are developed numerically. The velocity field, axial pressure gradient, s...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Journal of Combustion |
| Online Access: | http://dx.doi.org/10.1155/2016/8306839 |
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| _version_ | 1850159861127446528 |
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| author | Genshan Jiang Weilong Xu Yuechao Liu Yapan Wu Qian Kong |
| author_facet | Genshan Jiang Weilong Xu Yuechao Liu Yapan Wu Qian Kong |
| author_sort | Genshan Jiang |
| collection | DOAJ |
| description | In order to investigate the acoustically driven oscillating flow around coal particles in the power plant boiler, the two-dimensional, unsteady mass and momentum conservation equations for laminar flow in spherical coordinates are developed numerically. The velocity field, axial pressure gradient, shear stress, and flow separation angle on the particle surface are carefully analyzed with different values of acoustic Reynolds number and Strouhal number. The minimum frequency required for flow separation is also investigated with different SPL (sound pressure level). The axial pressure gradient, shear stress, and separation angle on the surface are proportional to the magnitude of the oscillating flow velocity at low frequency (~50 Hz). However, those physical quantities have different values at high frequency (~5000 Hz), due to the combined effect of curvature and the flow acceleration. |
| format | Article |
| id | doaj-art-b6269440f54c4820b7ab76b8cdff4789 |
| institution | OA Journals |
| issn | 2090-1968 2090-1976 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Combustion |
| spelling | doaj-art-b6269440f54c4820b7ab76b8cdff47892025-08-20T02:23:20ZengWileyJournal of Combustion2090-19682090-19762016-01-01201610.1155/2016/83068398306839A Numerical Study on the Oscillating Flow Induced by an Acoustic Field around Coal ParticlesGenshan Jiang0Weilong Xu1Yuechao Liu2Yapan Wu3Qian Kong4North China Electric Power University, Baoding 071003, ChinaNorth China Electric Power University, Beijing 102206, ChinaNorth China Electric Power University, Beijing 102206, ChinaNorth China Electric Power University, Baoding 071003, ChinaNorth China Electric Power University, Baoding 071003, ChinaIn order to investigate the acoustically driven oscillating flow around coal particles in the power plant boiler, the two-dimensional, unsteady mass and momentum conservation equations for laminar flow in spherical coordinates are developed numerically. The velocity field, axial pressure gradient, shear stress, and flow separation angle on the particle surface are carefully analyzed with different values of acoustic Reynolds number and Strouhal number. The minimum frequency required for flow separation is also investigated with different SPL (sound pressure level). The axial pressure gradient, shear stress, and separation angle on the surface are proportional to the magnitude of the oscillating flow velocity at low frequency (~50 Hz). However, those physical quantities have different values at high frequency (~5000 Hz), due to the combined effect of curvature and the flow acceleration.http://dx.doi.org/10.1155/2016/8306839 |
| spellingShingle | Genshan Jiang Weilong Xu Yuechao Liu Yapan Wu Qian Kong A Numerical Study on the Oscillating Flow Induced by an Acoustic Field around Coal Particles Journal of Combustion |
| title | A Numerical Study on the Oscillating Flow Induced by an Acoustic Field around Coal Particles |
| title_full | A Numerical Study on the Oscillating Flow Induced by an Acoustic Field around Coal Particles |
| title_fullStr | A Numerical Study on the Oscillating Flow Induced by an Acoustic Field around Coal Particles |
| title_full_unstemmed | A Numerical Study on the Oscillating Flow Induced by an Acoustic Field around Coal Particles |
| title_short | A Numerical Study on the Oscillating Flow Induced by an Acoustic Field around Coal Particles |
| title_sort | numerical study on the oscillating flow induced by an acoustic field around coal particles |
| url | http://dx.doi.org/10.1155/2016/8306839 |
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