Influence of ultrasound power on acoustic streaming and micro-bubbles formations in a low frequency sono-reactor: Mathematical and 3D computational simulation
This paper aims at investigating the influence of ultrasound power amplitude on liquid behaviour in a low-frequency (24 kHz) sono-reactor. Three types of analysis were employed: (i) mechanical analysis of micro-bubbles formation and their activities/characteristics using mathematical modelling. (ii)...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2015
|
| Subjects: | |
| Online Access: | http://eprints.um.edu.my/14009/1/Influence_of_ultrasound_power_on_acoustic_streaming_and_micro.pdf |
| _version_ | 1796946676262371328 |
|---|---|
| author | Sajjadi, B. Abdul Raman, Abdul Aziz Ibrahim, Shaliza |
| author_facet | Sajjadi, B. Abdul Raman, Abdul Aziz Ibrahim, Shaliza |
| author_sort | Sajjadi, B. |
| collection | UM |
| description | This paper aims at investigating the influence of ultrasound power amplitude on liquid behaviour in a low-frequency (24 kHz) sono-reactor. Three types of analysis were employed: (i) mechanical analysis of micro-bubbles formation and their activities/characteristics using mathematical modelling. (ii) Numerical analysis of acoustic streaming, fluid flow pattern, volume fraction of micro-bubbles and turbulence using 3D CFD simulation. (iii) Practical analysis of fluid flow pattern and acoustic streaming under ultrasound irradiation using Particle Image Velocimetry (Ply). In mathematical modelling, a lone micro bubble generated under power ultrasound irradiation was mechanistically analysed. Its characteristics were illustrated as a function of bubble radius, internal temperature and pressure (hot spot conditions) and oscillation (pulsation) velocity. The results showed that ultrasound power significantly affected the conditions of hotspots and bubbles oscillation velocity. From the CFD results, it was observed that the total volume of the micro-bubbles increased by about 4.95 with each 100 W-increase in power amplitude. Furthermore, velocity of acoustic streaming increased from 29 to 119 cm/s as power increased, which was in good agreement with the PIV analysis. (C) 2014 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-06T05:35:24Z |
| format | Article |
| id | um.eprints-14009 |
| institution | Universiti Malaya |
| language | English |
| last_indexed | 2024-03-06T05:35:24Z |
| publishDate | 2015 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-140092019-12-06T07:55:24Z http://eprints.um.edu.my/14009/ Influence of ultrasound power on acoustic streaming and micro-bubbles formations in a low frequency sono-reactor: Mathematical and 3D computational simulation Sajjadi, B. Abdul Raman, Abdul Aziz Ibrahim, Shaliza T Technology (General) TP Chemical technology This paper aims at investigating the influence of ultrasound power amplitude on liquid behaviour in a low-frequency (24 kHz) sono-reactor. Three types of analysis were employed: (i) mechanical analysis of micro-bubbles formation and their activities/characteristics using mathematical modelling. (ii) Numerical analysis of acoustic streaming, fluid flow pattern, volume fraction of micro-bubbles and turbulence using 3D CFD simulation. (iii) Practical analysis of fluid flow pattern and acoustic streaming under ultrasound irradiation using Particle Image Velocimetry (Ply). In mathematical modelling, a lone micro bubble generated under power ultrasound irradiation was mechanistically analysed. Its characteristics were illustrated as a function of bubble radius, internal temperature and pressure (hot spot conditions) and oscillation (pulsation) velocity. The results showed that ultrasound power significantly affected the conditions of hotspots and bubbles oscillation velocity. From the CFD results, it was observed that the total volume of the micro-bubbles increased by about 4.95 with each 100 W-increase in power amplitude. Furthermore, velocity of acoustic streaming increased from 29 to 119 cm/s as power increased, which was in good agreement with the PIV analysis. (C) 2014 Elsevier B.V. All rights reserved. Elsevier 2015-05 Article PeerReviewed application/pdf en http://eprints.um.edu.my/14009/1/Influence_of_ultrasound_power_on_acoustic_streaming_and_micro.pdf Sajjadi, B. and Abdul Raman, Abdul Aziz and Ibrahim, Shaliza (2015) Influence of ultrasound power on acoustic streaming and micro-bubbles formations in a low frequency sono-reactor: Mathematical and 3D computational simulation. Ultrasonics Sonochemistry, 24. pp. 193-203. ISSN 1350-4177, DOI https://doi.org/10.1016/j.ultsonch.2014.11.013 <https://doi.org/10.1016/j.ultsonch.2014.11.013>. http://www.sciencedirect.com/science/article/pii/S1350417714003472 doi:10.1016/j.ultsonch.2014.11.013 |
| spellingShingle | T Technology (General) TP Chemical technology Sajjadi, B. Abdul Raman, Abdul Aziz Ibrahim, Shaliza Influence of ultrasound power on acoustic streaming and micro-bubbles formations in a low frequency sono-reactor: Mathematical and 3D computational simulation |
| title | Influence of ultrasound power on acoustic streaming and micro-bubbles formations in a low frequency sono-reactor: Mathematical and 3D computational simulation |
| title_full | Influence of ultrasound power on acoustic streaming and micro-bubbles formations in a low frequency sono-reactor: Mathematical and 3D computational simulation |
| title_fullStr | Influence of ultrasound power on acoustic streaming and micro-bubbles formations in a low frequency sono-reactor: Mathematical and 3D computational simulation |
| title_full_unstemmed | Influence of ultrasound power on acoustic streaming and micro-bubbles formations in a low frequency sono-reactor: Mathematical and 3D computational simulation |
| title_short | Influence of ultrasound power on acoustic streaming and micro-bubbles formations in a low frequency sono-reactor: Mathematical and 3D computational simulation |
| title_sort | influence of ultrasound power on acoustic streaming and micro bubbles formations in a low frequency sono reactor mathematical and 3d computational simulation |
| topic | T Technology (General) TP Chemical technology |
| url | http://eprints.um.edu.my/14009/1/Influence_of_ultrasound_power_on_acoustic_streaming_and_micro.pdf |
| work_keys_str_mv | AT sajjadib influenceofultrasoundpoweronacousticstreamingandmicrobubblesformationsinalowfrequencysonoreactormathematicaland3dcomputationalsimulation AT abdulramanabdulaziz influenceofultrasoundpoweronacousticstreamingandmicrobubblesformationsinalowfrequencysonoreactormathematicaland3dcomputationalsimulation AT ibrahimshaliza influenceofultrasoundpoweronacousticstreamingandmicrobubblesformationsinalowfrequencysonoreactormathematicaland3dcomputationalsimulation |