Library of Technical Faculties, Maribor (KTFMB)
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Merjenje hitrosti abrazivnih delcev v dvofaznih tokovih : doktorska disertacijaBombek, GorazdDoktorska disertacija predstavlja zasnovo, razvoj in testiranje merilnega sistema za merjenje hitrosti delcev znotraj toka trdnih delcev v dvofaznem sistemu trdno-plinasto. Merilna metoda je primerna ... za tokove, pri katerih delci potujejo v izrazitih valovih. Metoda temelji na določanju časovnega zamika med udarci delcev iz istega vala v dve tarči, ki sta nameščeni na znani medsebojni razdalji. Izdelano in preizkušeno je bilo zaznavalo, ki omogoča zaznavanje udarcev posameznih delcev, med katerimi mine vsaj 0,05 milisekunde. Zaznavalo temelji na zaznavanju zvoka, ki nastane zaradi trka delca v glavo zaznavala in ga zaznamo z mikrofonom. Prednost predstavljenega zaznavala je v visoki lastni frekvenci in dobri občutljivosti na čelne zadetke in slabi na bočne zadetke in vibracije. Obdelava rezultatov v primeru ponavljajočih se vzpodbud temelji na določanju povprečnega udarca s prekrivanjem velikega števila intervalov ustreznih dolžin in izračunu povprečne intenzitete udarcev. Časovni zamik med diagrami povprečne intenzitete se nato določi s križno korelacijo. V primeru vzpodbud, ki se ne ponavljajo, se lahko uporabi samo križna korelacija. Merilni sistem je bil uspešno preizkušen v stroju za peskanje. Frekvenca vzpodbude je znašala 300 Hz, hitrost delcev pa okoli 75 m/s. Metoda z izračunom povprečne intenzitete udarcev omogoča tudi vpogled v delovanje rotorja peskalnega stroja, predvsem sstališča enakomernosti delovanja in obremenitve rotorskih lopatic. Prednost omenjene metode je, da lahko merimo profil hitrosti delcev znotraj toka in pritem nismo vezani na zahteve po optični vidljivosti ali posebnih snovskih lastnostih delcev.Type of material - dissertation ; adult, seriousPublication and manufacture - Maribor : [G. Bombek], 2005Language - slovenianCOBISS.SI-ID - 9579030
Author
Bombek, Gorazd
Other authors
Hribernik, Aleš, 1960- |
Marn, Jure
Topics
dvofazni tok |
abrazivni delci |
peskanje |
meritve hitrosti |
two phase flow |
velocity |
abrasive particles |
shot-blasting wheel |
measurements
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pisarna A-003 (FERI) DD BOMBEK G. Merjenje pisarna A-003 (FERI) DD BOMBEK G. Merjenje |
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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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Bombek, Gorazd | 19096 |
Hribernik, Aleš, 1960- | 05536 |
Marn, Jure | 08584 |
Source: Personal bibliographies
and: SICRIS
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