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Vpliv količine plinov v vodi in hitrosti toka na agresivnost kavitacijske erozije = The influence of the gas content of water and the flow velocity on cavitation erosion aggressivenessDular, Matevž ; Širok, Brane ; Stoffel, BerndV prispevku je predstavljena studija vpliva količine plinov v vodi in hitrosti toka na agresivnost kavitacjske erozije. Preizkusi so bili opravljeni na osamljenem profilu v kavitacijskem kanalu. ... Medtem ko sta bila kavitacijsko število in hitrost toka nespremenljiva, smo v korakih spreminjali količino plinov v vodi od majhne (približno 1%) do velike vsebnosti (4%). Količino plinov v vodi smo nadzorovali z generatorjem mehurčkov. Pri tem so bili narejeni preizkusi ob konstantnem kavitacijskem številu in količini raztopljenih plinov, vendar različnih hitrostih toka (10, 13 in 16 mžs). Za zaznavalo kavitacijske erozije je rabila tanka bakrena folija, nanešena na profil. Pod določeno povečavo smo posneli slike poškodovane površine bakrene folije. Za neposredno meritev kavitacijske erozije smo uporabili metodo štetja luknjic, ki temelji na računalnisko podprti vizualizaciji. Preizkusi so pokazali očiten vpliv količine plinov in hitrosti toka na intenzivnost erozije. Agresivnost kavitacijske erozije se eksponentno zmanjšuje, ko večamo količino raztopljenih plinov. Potrjena je bila hipoteza o potenčnem zakonu za vpliv hitrosti toka na agresivnost kavitacijske erozije. Predstavljeni rezultati obetajo dobre možnosti za razvoj modela kavitacijske erozije ter možnost napovedi kavitacijske erozije z izključno numeričnimi metodami.Source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Letn. 51, št. 3, 2005, str. 132-145)Type of material - article, component partPublish date - 2005Language - slovenian, englishCOBISS.SI-ID - 8240411
Author
Dular, Matevž |
Širok, Brane |
Stoffel, Bernd
Topics
kavitacija |
erozija |
plini v vodi |
količine plinov |
hitrosti tokov |
kavitacija |
tokovne razmere |
gibanje tekočin |
gibanje tekočin
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source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Letn. 51, št. 3, 2005, str. 132-145)
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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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