Repetitive Acoustic Streaming Patterns in Sinusoidal Shaped Microchannels
Geometry of the fluid container plays a key role in the shape of acoustic streaming patterns. Inadvertent vortices can be troublesome in some cases, but if treated properly, the problem turns into a very useful parameter in acoustic tweezing or micromixing applications. In this paper, the effects of...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2020-02-01
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| Series: | Archives of Acoustics |
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| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2690 |
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| _version_ | 1849414551280287744 |
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| author | Elnaz JANNESAR Hossein HAMZEHPOUR |
| author_facet | Elnaz JANNESAR Hossein HAMZEHPOUR |
| author_sort | Elnaz JANNESAR |
| collection | DOAJ |
| description | Geometry of the fluid container plays a key role in the shape of acoustic streaming patterns. Inadvertent vortices can be troublesome in some cases, but if treated properly, the problem turns into a very useful parameter in acoustic tweezing or micromixing applications. In this paper, the effects of sinusoidal boundaries of a microchannel on acoustic streaming patterns are studied. The results show that while top and bottom sinusoidal walls are vertically actuated at the resonance frequency of basic hypothetical rectangular microchannel, some repetitive acoustic streaming patterns are recognised in classifiable cases. Such patterns can never be produced in the rectangular geometry with flat boundaries. Relations between geometrical parameters and emerging acoustic streaming patterns lead us to propose formulas in order to predict more cases. Such results and formulations were not trivial at a glance. |
| format | Article |
| id | doaj-art-998f5ccb1efe4ab287828d829aa14798 |
| institution | Kabale University |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2020-02-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-998f5ccb1efe4ab287828d829aa147982025-08-20T03:33:46ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2020-02-0145110.24425/aoa.2020.132480Repetitive Acoustic Streaming Patterns in Sinusoidal Shaped MicrochannelsElnaz JANNESAR0Hossein HAMZEHPOUR1K.N. Toosi University of TechnologyK.N. Toosi University of TechnologyGeometry of the fluid container plays a key role in the shape of acoustic streaming patterns. Inadvertent vortices can be troublesome in some cases, but if treated properly, the problem turns into a very useful parameter in acoustic tweezing or micromixing applications. In this paper, the effects of sinusoidal boundaries of a microchannel on acoustic streaming patterns are studied. The results show that while top and bottom sinusoidal walls are vertically actuated at the resonance frequency of basic hypothetical rectangular microchannel, some repetitive acoustic streaming patterns are recognised in classifiable cases. Such patterns can never be produced in the rectangular geometry with flat boundaries. Relations between geometrical parameters and emerging acoustic streaming patterns lead us to propose formulas in order to predict more cases. Such results and formulations were not trivial at a glance.https://acoustics.ippt.pan.pl/index.php/aa/article/view/2690acoustic streamingsinusoidal boundariesmicroscale vorticessub-microparticle trapping |
| spellingShingle | Elnaz JANNESAR Hossein HAMZEHPOUR Repetitive Acoustic Streaming Patterns in Sinusoidal Shaped Microchannels Archives of Acoustics acoustic streaming sinusoidal boundaries microscale vortices sub-microparticle trapping |
| title | Repetitive Acoustic Streaming Patterns in Sinusoidal Shaped Microchannels |
| title_full | Repetitive Acoustic Streaming Patterns in Sinusoidal Shaped Microchannels |
| title_fullStr | Repetitive Acoustic Streaming Patterns in Sinusoidal Shaped Microchannels |
| title_full_unstemmed | Repetitive Acoustic Streaming Patterns in Sinusoidal Shaped Microchannels |
| title_short | Repetitive Acoustic Streaming Patterns in Sinusoidal Shaped Microchannels |
| title_sort | repetitive acoustic streaming patterns in sinusoidal shaped microchannels |
| topic | acoustic streaming sinusoidal boundaries microscale vortices sub-microparticle trapping |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2690 |
| work_keys_str_mv | AT elnazjannesar repetitiveacousticstreamingpatternsinsinusoidalshapedmicrochannels AT hosseinhamzehpour repetitiveacousticstreamingpatternsinsinusoidalshapedmicrochannels |