National and University Library, Ljubljana (NUK)
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Development of a method for the prediction of cavitation erosion in hydraulic machines : dissertationDular, MatevžǂV ǂdoktorski nalogi je predstavljena študija kavitacijskih struktur in erozijskih učinkov kavitacije. Za vrednotenje kavitacijskih struktur smo uporabili računalniško podprto vizualizacijo. Velikost ... in mesto poškodb na površini profila smo določili z metodo štetja luknjic. Ugotovljena je bila tesna povezanost med dinamiko kavitacijskih struktur in poškodbami na površini profila. S PIV-LIF metodo smo določili hitrostno polje v okolici profila. Merili smo statični tlak na površini profila in opazovali dinamiko trganja kavitacijskih oblakov. Z računalniško dinamiko tekočin smo simulirali kavitirajoči tok. Rezultati simulacije (porazdelitev hitrosti, oblika kavitacije in njena dinamika, porazdelitev tlakov na profilu ...) se dobro ujemajo z izmerjenimi vrednostmi. Predstavljen je razvoj modela kavitacijske erozije. Napovedi modela se dobro ujemajo z meritvami poškodb površine profila. S kombinacijo simulacije kavitacije in modela kavitacijske erozije smo pokazali tudi, da je mogoče z zadovoljivo natančnostjo napovedati poškodbe površine samo na osnovi numeričnih orodij. Model smo preizkusili še na rotorju radialne črpalke - napovedi so se dobro ujemale z izmerjenimi vrednostmi. Rezultati dela kažejo na dobre možnosti napovedi in nadzora kavitacijske erozije v realnih hidravličnih strojih v prihodnosti.Type of material - dissertation ; adult, seriousPublication and manufacture - Ljubljana : [M. Dular], 2005Language - english, slovenianCOBISS.SI-ID - 8538139
Author
Dular, Matevž
Other authors
Širok, Brane |
Stoffel, Bernd
Topics
Hidravlični stroji |
Kavitacija |
Disertacije |
kavitacija |
osamljeni profil |
erozija |
računalniško podprta vizualizacija |
računalniška dinamika tekočin |
model kavitacijske erozije |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Dular, Matevž | 23471 |
Širok, Brane | 09286 |
Stoffel, Bernd | ![]() |
Source: Personal bibliographies
and: SICRIS
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