Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices
The use of a chevron nozzle/orifice is one of the methods of heat transfer enhancement and noise reduction. In the case of synthetic jets, the number of papers on this topic is small. Therefore, a synthetic jet actuator with three different chevron orifices and one circular orifice is investigated....
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/2/652 |
| _version_ | 1797413024894550016 |
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| author | Emil Smyk Marek Markowicz |
| author_facet | Emil Smyk Marek Markowicz |
| author_sort | Emil Smyk |
| collection | DOAJ |
| description | The use of a chevron nozzle/orifice is one of the methods of heat transfer enhancement and noise reduction. In the case of synthetic jets, the number of papers on this topic is small. Therefore, a synthetic jet actuator with three different chevron orifices and one circular orifice is investigated. The aim of this study is to find the impact of orifice shape on centerline velocity (measured with a hot-wire anemometer) and determine if the chevron orifice reduces the generated noise. The sound pressure level was strongly dependent on the input actuator’s power, and only one chevron orifice ensured noise reduction for low power (<i>p</i> = 6; 8 W). At real power <i>p</i> = 12 W, the sound pressure level was lower for each chevron orifice actuator than in the case of the circular orifice actuator. It is shown that the application of a chevron nozzle does not have to provide noise reduction. It is important in the case of the design of new actuators that are to operate in places where noise levels should be limited (e.g., offices). |
| first_indexed | 2024-03-09T05:11:35Z |
| format | Article |
| id | doaj.art-f8b72618155f4c6e907bb44bc49bc502 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T05:11:35Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-f8b72618155f4c6e907bb44bc49bc5022023-12-03T12:49:21ZengMDPI AGApplied Sciences2076-34172021-01-0111265210.3390/app11020652Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron OrificesEmil Smyk0Marek Markowicz1Faculty of Mechanical Engineering, UTP University of Science and Technology, Al. Prof. S. Kaliskiego 7, 85-796 Bydgoszcz, PolandFaculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, al. Powstańców Warszawy 12, 35-959 Rzeszów, PolandThe use of a chevron nozzle/orifice is one of the methods of heat transfer enhancement and noise reduction. In the case of synthetic jets, the number of papers on this topic is small. Therefore, a synthetic jet actuator with three different chevron orifices and one circular orifice is investigated. The aim of this study is to find the impact of orifice shape on centerline velocity (measured with a hot-wire anemometer) and determine if the chevron orifice reduces the generated noise. The sound pressure level was strongly dependent on the input actuator’s power, and only one chevron orifice ensured noise reduction for low power (<i>p</i> = 6; 8 W). At real power <i>p</i> = 12 W, the sound pressure level was lower for each chevron orifice actuator than in the case of the circular orifice actuator. It is shown that the application of a chevron nozzle does not have to provide noise reduction. It is important in the case of the design of new actuators that are to operate in places where noise levels should be limited (e.g., offices).https://www.mdpi.com/2076-3417/11/2/652ZNMFefficiencynoisevortexturbulence |
| spellingShingle | Emil Smyk Marek Markowicz Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices Applied Sciences ZNMF efficiency noise vortex turbulence |
| title | Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices |
| title_full | Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices |
| title_fullStr | Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices |
| title_full_unstemmed | Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices |
| title_short | Acoustic and Flow Aspects of Synthetic Jet Actuators with Chevron Orifices |
| title_sort | acoustic and flow aspects of synthetic jet actuators with chevron orifices |
| topic | ZNMF efficiency noise vortex turbulence |
| url | https://www.mdpi.com/2076-3417/11/2/652 |
| work_keys_str_mv | AT emilsmyk acousticandflowaspectsofsyntheticjetactuatorswithchevronorifices AT marekmarkowicz acousticandflowaspectsofsyntheticjetactuatorswithchevronorifices |