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Prediction of cavitation vortex dynamics in the draft tube of a francis turbine using radial basis neural networksHočevar, Marko, strojnik, 1972- ; Širok, Brane ; Blagojević, BogdanApplication of radial basis neural networks (RBNN) for prediction of cavitation vortex dynamics in a Francis turbine draft tube is presented. The dynamics of the cavitation vortex was established by ... fluctuations of a void fraction in a selected region of the draft tube. The void fraction was determined by image acquisition and analysis. Pressure in the draft tube and images of the cavitation vortex were acquired simultaneously for the experiment. RBNN were used for prediction. The void fraction in the selected region of the cavitation vortex was predicted on the basis of experimentally provided pressure data. The learning set consisted of pressure - void fractionpairs. The prediction consisted in providing only the pressure. Regression coefficients r between the predicted and measured void fractions were in an interval of 0.82-0.98. A good agreement between power spectra and correlation functions of measured and predicted void fractions was shown.Vir: Neural computing & applications. - ISSN 0941-0643 (Letn. 14, št. 3, 2005, str. 229-234)Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasleLeto - 2005Jezik - angleškiCOBISS.SI-ID - 8455963
Avtor
Hočevar, Marko, strojnik, 1972- |
Širok, Brane |
Blagojević, Bogdan
Teme
turbine Francis |
kavitacija |
tok vrtinčasti |
mreže nevronalne |
izbor cevi |
numerični modeli |
analitični modeli |
predvidevanja |
predvidevanja |
cavitation vortex |
draft tube |
Francis turbine |
prediction |
radial basis neural networks |
void fraction
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Hočevar, Marko, strojnik, 1972- | 18836 |
Širok, Brane | 09286 |
Blagojević, Bogdan | 10371 |
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