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International Journal of Engineering، جلد ۲۹، شماره ۴، صفحات ۵۳۰-۵۳۸
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Determining the Hydro-acoustic Characteristics of the Ship Propeller in Uniform and Non-uniform Flow |
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| چکیده انگلیسی مقاله |
This research has been carried out to determine the marine propeller hydro-acoustic characteristics by Reynolds-Averaged Navier-Stokes (RANS) solver in both uniform and non-uniform wake flow at different operating conditions Wake flow can cause changes in pressure fluctuation and gas effect on propeller noise spectrum. Noise is generated by the induced trailing vortex wake and induced pressure pulses. The two-step Fflowcs Williams and Hawkings (FW-H) equations are used to calculate hydrodynamic pressure and its performance as well as sound pressure level (SPL) at various points around the propeller. The directivity patterns of this propeller and accurate explanation of component propeller noise are discussed. Comparison of the numerical results shows good agreement with the experimental data. Based on these results, effects of wake flow and operating conditions on the noise reduction are investigated. |
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| کلیدواژه‌های انگلیسی مقاله |
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| نویسندگان مقاله |
Mohammad bakhtiari |
Mechanical eng., Malekashtar Univ of Tech
Mohsen Gorji |
Marine Eng, Malekashtar niversity of Tech
Hassan Ghassemi |
Marine Engineering Department, Amirkabir University of Technology
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| نشانی اینترنتی |
http://www.ije.ir/article_72705_9a36cd25879c20c1d03d79a8de9c50de.pdf |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/409/article-409-2062334.pdf |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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