Experimental Study on Bubble Acoustic Characteristics of Elliptical Nozzles
Bubble acoustic signals were reported experimentally using five different nozzles with the same exit cross-sections. The bubble morphology was captured by a home-made experiment setup, which could synchronously obtain images of two perpendicular directions. Short-Time Fourier Transform and synchroni...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2021-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/75/e3sconf_edep2021_01009.pdf |
| _version_ | 1819112226354626560 |
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| author | Cong Shanhao Liu Jingting |
| author_facet | Cong Shanhao Liu Jingting |
| author_sort | Cong Shanhao |
| collection | DOAJ |
| description | Bubble acoustic signals were reported experimentally using five different nozzles with the same exit cross-sections. The bubble morphology was captured by a home-made experiment setup, which could synchronously obtain images of two perpendicular directions. Short-Time Fourier Transform and synchronization of video and audio were adopted to analyse the acoustic signal. Results demonstrated that the sound pressure of symmetrical bubble formation was higher than that of asymmetrical bubble formation, while the sound pressure of asymmetrical bubble formation was higher than that of the bubble with an unapparent necking fracture detached from the nozzle of the aspect ratio is 4:1. Furthermore, the last bubble of bubble chains would change the shape and decay rate of the acoustic signal due to the difference in the period of bubble formation. These studies can provide more effective information to predict the leaks from undersea gas pipelines, seabed methane reserves, and carbon capture and storage facilities. |
| first_indexed | 2024-12-22T04:10:08Z |
| format | Article |
| id | doaj.art-fda0226b33be4b76a97ccf8a0b4ef29b |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-22T04:10:08Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-fda0226b33be4b76a97ccf8a0b4ef29b2022-12-21T18:39:32ZengEDP SciencesE3S Web of Conferences2267-12422021-01-012990100910.1051/e3sconf/202129901009e3sconf_edep2021_01009Experimental Study on Bubble Acoustic Characteristics of Elliptical NozzlesCong Shanhao0Liu JingtingSchool of Mechanical Engineering, Shandong UniversityBubble acoustic signals were reported experimentally using five different nozzles with the same exit cross-sections. The bubble morphology was captured by a home-made experiment setup, which could synchronously obtain images of two perpendicular directions. Short-Time Fourier Transform and synchronization of video and audio were adopted to analyse the acoustic signal. Results demonstrated that the sound pressure of symmetrical bubble formation was higher than that of asymmetrical bubble formation, while the sound pressure of asymmetrical bubble formation was higher than that of the bubble with an unapparent necking fracture detached from the nozzle of the aspect ratio is 4:1. Furthermore, the last bubble of bubble chains would change the shape and decay rate of the acoustic signal due to the difference in the period of bubble formation. These studies can provide more effective information to predict the leaks from undersea gas pipelines, seabed methane reserves, and carbon capture and storage facilities.https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/75/e3sconf_edep2021_01009.pdf |
| spellingShingle | Cong Shanhao Liu Jingting Experimental Study on Bubble Acoustic Characteristics of Elliptical Nozzles E3S Web of Conferences |
| title | Experimental Study on Bubble Acoustic Characteristics of Elliptical Nozzles |
| title_full | Experimental Study on Bubble Acoustic Characteristics of Elliptical Nozzles |
| title_fullStr | Experimental Study on Bubble Acoustic Characteristics of Elliptical Nozzles |
| title_full_unstemmed | Experimental Study on Bubble Acoustic Characteristics of Elliptical Nozzles |
| title_short | Experimental Study on Bubble Acoustic Characteristics of Elliptical Nozzles |
| title_sort | experimental study on bubble acoustic characteristics of elliptical nozzles |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/75/e3sconf_edep2021_01009.pdf |
| work_keys_str_mv | AT congshanhao experimentalstudyonbubbleacousticcharacteristicsofellipticalnozzles AT liujingting experimentalstudyonbubbleacousticcharacteristicsofellipticalnozzles |