Numerical Analysis on the Flow Noise in the Indoor Unit and Cross Flow Fan of Air-conditioners
Air flow noise is an important parameter influencing the amenity of indoor environment, which is mainly caused by the cross flow fan in the indoor unit of air conditioners. The noise prediction method is presented by integrating the unsteady flow field simulation and aerodynamic noise model. The uns...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2012-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2012.03.009 |
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| _version_ | 1850232983936565248 |
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| author | Shao Shuangquan Lu Dawei Jeon Won-Ho |
| author_facet | Shao Shuangquan Lu Dawei Jeon Won-Ho |
| author_sort | Shao Shuangquan |
| collection | DOAJ |
| description | Air flow noise is an important parameter influencing the amenity of indoor environment, which is mainly caused by the cross flow fan in the indoor unit of air conditioners. The noise prediction method is presented by integrating the unsteady flow field simulation and aerodynamic noise model. The unsteady incompressible Navier-Stokes equation is solved with RNG k-ε turbulence model with a sliding mesh technique. The aeroacoustic pressure is calculated by Ffowcs-Williams and Hawkings equation. The unsteady pressure data, which is calculated from the unsteady flow field, is used as input data for the FWH equation. This method is applied to analyze the unsteady flow field and flow noise of the cross flow fan in the indoor unit, and the predicted sound pressure level and acoustic spectrum agree well with the measured data not only total noise but also broadband noise. These results show that this numerical method can be used as an effective tool for optimization of axial fans for compact design, large air volume and low noise. |
| format | Article |
| id | doaj-art-29fb6df25ced4c3e9b102424295c3a9d |
| institution | OA Journals |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2012-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-29fb6df25ced4c3e9b102424295c3a9d2025-08-20T02:03:01ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392012-01-013366519077Numerical Analysis on the Flow Noise in the Indoor Unit and Cross Flow Fan of Air-conditionersShao ShuangquanLu DaweiJeon Won-HoAir flow noise is an important parameter influencing the amenity of indoor environment, which is mainly caused by the cross flow fan in the indoor unit of air conditioners. The noise prediction method is presented by integrating the unsteady flow field simulation and aerodynamic noise model. The unsteady incompressible Navier-Stokes equation is solved with RNG k-ε turbulence model with a sliding mesh technique. The aeroacoustic pressure is calculated by Ffowcs-Williams and Hawkings equation. The unsteady pressure data, which is calculated from the unsteady flow field, is used as input data for the FWH equation. This method is applied to analyze the unsteady flow field and flow noise of the cross flow fan in the indoor unit, and the predicted sound pressure level and acoustic spectrum agree well with the measured data not only total noise but also broadband noise. These results show that this numerical method can be used as an effective tool for optimization of axial fans for compact design, large air volume and low noise.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2012.03.009Power machinery and engineeringAir-conditionerNoiseFansimulationCFD |
| spellingShingle | Shao Shuangquan Lu Dawei Jeon Won-Ho Numerical Analysis on the Flow Noise in the Indoor Unit and Cross Flow Fan of Air-conditioners Zhileng xuebao Power machinery and engineering Air-conditioner Noise Fan simulation CFD |
| title | Numerical Analysis on the Flow Noise in the Indoor Unit and Cross Flow Fan of Air-conditioners |
| title_full | Numerical Analysis on the Flow Noise in the Indoor Unit and Cross Flow Fan of Air-conditioners |
| title_fullStr | Numerical Analysis on the Flow Noise in the Indoor Unit and Cross Flow Fan of Air-conditioners |
| title_full_unstemmed | Numerical Analysis on the Flow Noise in the Indoor Unit and Cross Flow Fan of Air-conditioners |
| title_short | Numerical Analysis on the Flow Noise in the Indoor Unit and Cross Flow Fan of Air-conditioners |
| title_sort | numerical analysis on the flow noise in the indoor unit and cross flow fan of air conditioners |
| topic | Power machinery and engineering Air-conditioner Noise Fan simulation CFD |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2012.03.009 |
| work_keys_str_mv | AT shaoshuangquan numericalanalysisontheflownoiseintheindoorunitandcrossflowfanofairconditioners AT ludawei numericalanalysisontheflownoiseintheindoorunitandcrossflowfanofairconditioners AT jeonwonho numericalanalysisontheflownoiseintheindoorunitandcrossflowfanofairconditioners |