Study On Noise Reduction of Nozzle Shock Diamond Flow Destroyed by Flexible Components
American Journal of Optics and Photonics
Volume 2, Issue 2, April 2014, Pages: 12-17
Received: Mar. 5, 2014; Accepted: Apr. 10, 2014; Published: Apr. 20, 2014
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Authors
Chung-Hwei Su, Department of Safety, Health and Environmental Engineering, National Kaohsiung First University of Science and Technology, Taiwan
Chien-Chih Chen, GraduateInstituteof Mechanical and Electrical Engineering, National Taipei University of Technology, Taipei, 10608 Taiwan
Yi-Hua Pan, Institute of Mechatronic Engineering, National Taipei University of Technology, Taipei, 10608 Taiwan
Chen-Ching Ting, Department of Mechanical Engineering, National Taipei University of Technology, Taipei, 10608 Taiwan
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Abstract
It's well known that the high pressure flow running through the nozzle yields shock diamond flow which mainly causes the noise. This work employed flexible components on the nozzle outlet to destroy shock diamond flow and using micro color schlieren technique to visual the dispersion shock diamond. Experiments adjusted conditions of and mesh flexible components for optimal design. The results show that wire diameter 0.5mm of cross flexible component, away from nozzle 0.5cm and 1cm received the noise of 83.8dB, the reducing rate was ca.12.5%. The mesh 100 flexible component away from nozzle 0.5cm received the noise of 75.6dB, the reducing rate was ca. 21.17%.
Keywords
Nozzle Noise, Nozzle Flow, Micro Color Schlieren, Shock Diamond Flow
To cite this article
Chung-Hwei Su, Chien-Chih Chen, Yi-Hua Pan, Chen-Ching Ting, Study On Noise Reduction of Nozzle Shock Diamond Flow Destroyed by Flexible Components, American Journal of Optics and Photonics. Vol. 2, No. 2, 2014, pp. 12-17. doi: 10.11648/j.ajop.20140202.11
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