Investigation on different time-harmonic models using FEM for the prediction of acoustic pressure fields in a pilot-scale sonoreactor
In this study, the performance of three different acoustic pressure models were evaluated by comparing the predicted pressure field with sonochemiluminescence data. The nonlinear Helmholtz model showed the best agreement in terms of antinode and pressure magnitude predictions. The linear Helmholtz m...
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| Format: | Article |
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Elsevier Ltd
2021
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| _version_ | 1796866468629970944 |
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| author | Chu, Jin Kiat Tiong, T. Joyce Chong, Siewhui Asli, Umi Aisah |
| author_facet | Chu, Jin Kiat Tiong, T. Joyce Chong, Siewhui Asli, Umi Aisah |
| author_sort | Chu, Jin Kiat |
| collection | ePrints |
| description | In this study, the performance of three different acoustic pressure models were evaluated by comparing the predicted pressure field with sonochemiluminescence data. The nonlinear Helmholtz model showed the best agreement in terms of antinode and pressure magnitude predictions. The linear Helmholtz model was found to overpredict the antinodes and acoustic pressure magnitudes in the reactor due to the lack of attenuation mechanisms. Results showed that the antinode locations predicted by the monodisperse Commander and Prosperetti model at constant bubble density was highly dependant on the specified bubble fraction. A new approach was proposed, which involved tuning the bubble fraction of the model using wavelength measurements from sonochemiluminescence results. Simulation results using this new approach showed promising agreement to experimental observations. The proposed method can be a simple and efficient way to tune acoustic pressure simulations for systems that forms uniform standing waves, which can then be useful for sonoreactor design. |
| first_indexed | 2024-03-05T21:12:36Z |
| format | Article |
| id | utm.eprints-97671 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T21:12:36Z |
| publishDate | 2021 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | utm.eprints-976712022-10-25T10:31:58Z http://eprints.utm.my/97671/ Investigation on different time-harmonic models using FEM for the prediction of acoustic pressure fields in a pilot-scale sonoreactor Chu, Jin Kiat Tiong, T. Joyce Chong, Siewhui Asli, Umi Aisah TP Chemical technology In this study, the performance of three different acoustic pressure models were evaluated by comparing the predicted pressure field with sonochemiluminescence data. The nonlinear Helmholtz model showed the best agreement in terms of antinode and pressure magnitude predictions. The linear Helmholtz model was found to overpredict the antinodes and acoustic pressure magnitudes in the reactor due to the lack of attenuation mechanisms. Results showed that the antinode locations predicted by the monodisperse Commander and Prosperetti model at constant bubble density was highly dependant on the specified bubble fraction. A new approach was proposed, which involved tuning the bubble fraction of the model using wavelength measurements from sonochemiluminescence results. Simulation results using this new approach showed promising agreement to experimental observations. The proposed method can be a simple and efficient way to tune acoustic pressure simulations for systems that forms uniform standing waves, which can then be useful for sonoreactor design. Elsevier Ltd 2021 Article PeerReviewed Chu, Jin Kiat and Tiong, T. Joyce and Chong, Siewhui and Asli, Umi Aisah (2021) Investigation on different time-harmonic models using FEM for the prediction of acoustic pressure fields in a pilot-scale sonoreactor. Chemical Engineering Science, 247 (NA). pp. 1-15. ISSN 0009-2509 http://dx.doi.org/10.1016/j.ces.2021.116912 DOI : 10.1016/j.ces.2021.116912 |
| spellingShingle | TP Chemical technology Chu, Jin Kiat Tiong, T. Joyce Chong, Siewhui Asli, Umi Aisah Investigation on different time-harmonic models using FEM for the prediction of acoustic pressure fields in a pilot-scale sonoreactor |
| title | Investigation on different time-harmonic models using FEM for the prediction of acoustic pressure fields in a pilot-scale sonoreactor |
| title_full | Investigation on different time-harmonic models using FEM for the prediction of acoustic pressure fields in a pilot-scale sonoreactor |
| title_fullStr | Investigation on different time-harmonic models using FEM for the prediction of acoustic pressure fields in a pilot-scale sonoreactor |
| title_full_unstemmed | Investigation on different time-harmonic models using FEM for the prediction of acoustic pressure fields in a pilot-scale sonoreactor |
| title_short | Investigation on different time-harmonic models using FEM for the prediction of acoustic pressure fields in a pilot-scale sonoreactor |
| title_sort | investigation on different time harmonic models using fem for the prediction of acoustic pressure fields in a pilot scale sonoreactor |
| topic | TP Chemical technology |
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