Numerical optimization of straight multi-array side-branched mufflers using differential evolution method
To overcome this noise, traditional reactive as well as dissipative mufflers have been used. However, the allowable backpressure and the extra load acting on the cooling tower are limited. So, in order to efficiently reduce the broad noise under a low-pressure drop and a small dead weight, a straigh...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2018-06-01
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| Series: | Journal of Low Frequency Noise, Vibration and Active Control |
| Online Access: | https://doi.org/10.1177/1461348418780019 |
| _version_ | 1811206790855000064 |
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| author | Min-Chie Chiu |
| author_facet | Min-Chie Chiu |
| author_sort | Min-Chie Chiu |
| collection | DOAJ |
| description | To overcome this noise, traditional reactive as well as dissipative mufflers have been used. However, the allowable backpressure and the extra load acting on the cooling tower are limited. So, in order to efficiently reduce the broad noise under a low-pressure drop and a small dead weight, a straight multi-array resonator muffler without sound absorbing wool is required. Multi-array Helmholtz mufflers with complicated Helmholtz resonators were found to be too expensive in manufacturing costs and can be easily accumulated with duct and water. Therefore, a straight multi-array side-branched muffler with an empty chamber is proposed. Here, to efficiently reduce the broadband noise level, eight kinds of mufflers (muffler A–H) with 1–8 raw chambers internally partitioned with concentric perforated plate will also be introduced. To delineate the best acoustical performance of a space-constrained muffler, a numerical assessment using a four-pole matrix method in conjunction with a differential evolution method is adopted. To verify the availability of the differential evolution optimization, a numerical optimization of mufflers A–H at a pure tone (400 Hz) is exemplified. Before the differential evolution operation in broadband noise elimination can be carried out, the accuracy of the mathematical model has been checked using the experimental data. Consequently, a successful approach in eliminating a broadband noise with a low-pressure drop and a dead load using optimally shaped straight multi-array side-branched mufflers and a differential evolution method within a constrained space has been demonstrated. |
| first_indexed | 2024-04-12T03:52:52Z |
| format | Article |
| id | doaj.art-6a840e9f548a4fbfbe372eb751b82a34 |
| institution | Directory Open Access Journal |
| issn | 1461-3484 2048-4046 |
| language | English |
| last_indexed | 2024-04-12T03:52:52Z |
| publishDate | 2018-06-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Low Frequency Noise, Vibration and Active Control |
| spelling | doaj.art-6a840e9f548a4fbfbe372eb751b82a342022-12-22T03:48:55ZengSAGE PublishingJournal of Low Frequency Noise, Vibration and Active Control1461-34842048-40462018-06-013710.1177/1461348418780019Numerical optimization of straight multi-array side-branched mufflers using differential evolution methodMin-Chie ChiuTo overcome this noise, traditional reactive as well as dissipative mufflers have been used. However, the allowable backpressure and the extra load acting on the cooling tower are limited. So, in order to efficiently reduce the broad noise under a low-pressure drop and a small dead weight, a straight multi-array resonator muffler without sound absorbing wool is required. Multi-array Helmholtz mufflers with complicated Helmholtz resonators were found to be too expensive in manufacturing costs and can be easily accumulated with duct and water. Therefore, a straight multi-array side-branched muffler with an empty chamber is proposed. Here, to efficiently reduce the broadband noise level, eight kinds of mufflers (muffler A–H) with 1–8 raw chambers internally partitioned with concentric perforated plate will also be introduced. To delineate the best acoustical performance of a space-constrained muffler, a numerical assessment using a four-pole matrix method in conjunction with a differential evolution method is adopted. To verify the availability of the differential evolution optimization, a numerical optimization of mufflers A–H at a pure tone (400 Hz) is exemplified. Before the differential evolution operation in broadband noise elimination can be carried out, the accuracy of the mathematical model has been checked using the experimental data. Consequently, a successful approach in eliminating a broadband noise with a low-pressure drop and a dead load using optimally shaped straight multi-array side-branched mufflers and a differential evolution method within a constrained space has been demonstrated.https://doi.org/10.1177/1461348418780019 |
| spellingShingle | Min-Chie Chiu Numerical optimization of straight multi-array side-branched mufflers using differential evolution method Journal of Low Frequency Noise, Vibration and Active Control |
| title | Numerical optimization of straight multi-array side-branched mufflers using differential evolution method |
| title_full | Numerical optimization of straight multi-array side-branched mufflers using differential evolution method |
| title_fullStr | Numerical optimization of straight multi-array side-branched mufflers using differential evolution method |
| title_full_unstemmed | Numerical optimization of straight multi-array side-branched mufflers using differential evolution method |
| title_short | Numerical optimization of straight multi-array side-branched mufflers using differential evolution method |
| title_sort | numerical optimization of straight multi array side branched mufflers using differential evolution method |
| url | https://doi.org/10.1177/1461348418780019 |
| work_keys_str_mv | AT minchiechiu numericaloptimizationofstraightmultiarraysidebranchedmufflersusingdifferentialevolutionmethod |