Analysis of Geometries' Effects on Rotating Stall in Vaneless Diffuser with Wavelet Neural Networks
Wavelet neural network (WNN), which combines the capability of neural network in learning from process and that of wavelet decomposition, was used to study geometry factors on rotating stall in vaneless diffusers. A new error function called cross entropy squared (CSE) function was derived and put f...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2007-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2007/76476 |
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| _version_ | 1832567163205976064 |
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| author | Chuang Gao Chuangang Gu Tong Wang Bo Yang |
| author_facet | Chuang Gao Chuangang Gu Tong Wang Bo Yang |
| author_sort | Chuang Gao |
| collection | DOAJ |
| description | Wavelet neural network (WNN), which combines the capability of neural network in learning from process and that of wavelet decomposition, was used to study geometry factors on rotating stall in vaneless diffusers. A new error function called cross entropy squared (CSE) function was derived and put forward for the purpose of convergence acceleration. WNN was trained and validated with experimental data from literature. Comparison results showed the reliability. With the trained WNN, detailed investigation was carried out mainly to understand the effects of impeller blade number, blade-exit angle, impeller rotating speed, diffuser radius ratio, and width ratio on stall inception and cell speed of vaneless diffuser. Network results clearly show the existence of distinct stall mechanisms for narrow and wide diffusers, which also make different responses to variation of the above- mentioned parameters. |
| format | Article |
| id | doaj-art-3749647bae9248b6ab1e198952306b91 |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2007-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-3749647bae9248b6ab1e198952306b912025-02-03T01:02:09ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342007-01-01200710.1155/2007/7647676476Analysis of Geometries' Effects on Rotating Stall in Vaneless Diffuser with Wavelet Neural NetworksChuang Gao0Chuangang Gu1Tong Wang2Bo Yang3Key Lab of Power Machinery and Engineering of Ministry Education, Shanghai Jiao Tong University, Shanghai 200030, ChinaKey Lab of Power Machinery and Engineering of Ministry Education, Shanghai Jiao Tong University, Shanghai 200030, ChinaKey Lab of Power Machinery and Engineering of Ministry Education, Shanghai Jiao Tong University, Shanghai 200030, ChinaKey Lab of Power Machinery and Engineering of Ministry Education, Shanghai Jiao Tong University, Shanghai 200030, ChinaWavelet neural network (WNN), which combines the capability of neural network in learning from process and that of wavelet decomposition, was used to study geometry factors on rotating stall in vaneless diffusers. A new error function called cross entropy squared (CSE) function was derived and put forward for the purpose of convergence acceleration. WNN was trained and validated with experimental data from literature. Comparison results showed the reliability. With the trained WNN, detailed investigation was carried out mainly to understand the effects of impeller blade number, blade-exit angle, impeller rotating speed, diffuser radius ratio, and width ratio on stall inception and cell speed of vaneless diffuser. Network results clearly show the existence of distinct stall mechanisms for narrow and wide diffusers, which also make different responses to variation of the above- mentioned parameters.http://dx.doi.org/10.1155/2007/76476 |
| spellingShingle | Chuang Gao Chuangang Gu Tong Wang Bo Yang Analysis of Geometries' Effects on Rotating Stall in Vaneless Diffuser with Wavelet Neural Networks International Journal of Rotating Machinery |
| title | Analysis of Geometries' Effects on Rotating Stall in Vaneless Diffuser with Wavelet Neural Networks |
| title_full | Analysis of Geometries' Effects on Rotating Stall in Vaneless Diffuser with Wavelet Neural Networks |
| title_fullStr | Analysis of Geometries' Effects on Rotating Stall in Vaneless Diffuser with Wavelet Neural Networks |
| title_full_unstemmed | Analysis of Geometries' Effects on Rotating Stall in Vaneless Diffuser with Wavelet Neural Networks |
| title_short | Analysis of Geometries' Effects on Rotating Stall in Vaneless Diffuser with Wavelet Neural Networks |
| title_sort | analysis of geometries effects on rotating stall in vaneless diffuser with wavelet neural networks |
| url | http://dx.doi.org/10.1155/2007/76476 |
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