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Simulacija plinsko fokusiranega nenewtonskega mikro-curka : zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni programZagorec, LeonV delu smo numerično modelirali plinsko fokusirani mikro-curek za dostavo vzorcev v femtosekundni kristalografiji. Obravnavali smo standardno obliko mikro-šobe in nominalni pretok plina (helij) 10,8 ... mg/min (Reg = 198,1 in Weg = 19,3) in kapljevine (voda) 43,2 µl/min (Rel = 111,2 in Wel = 19,0 ) pri Ca = 0,16. Dvofazni sistem kapljevina-plin je bil obravnavan kot nestisljiva idealna mešanica v osni simetriji. Reologija kapljevine je bila obravnavana v okviru potenčne nenewtonske formulacije. Fokusirni plin je bil obravnavan kot idealni plin. V delu je obravnavan newtonski tok in nenewtonski strižno-redčeni tok (^ od 0 do 0,5) in strižno-zgoščevani tok (^ od 1 do 1,5), s ^ = 1,0 ? 10?6 m2/s. Sistem enačb za ohranitev mase in gibalne količine je bil numerično rešen na podlagi metode kontrolnih volumnov. Medfazni rob med plinom in kapljevino je bil določen na podlagi metode volumna tekočine. Pri newtonski tekočini je premer curka 9 µm, dolžina 1538 µm in povprečna hitrost 18,98 m/s. V primerjavi z newtonsko tekočino ima strižno redčeni primer (^ = 0,5) za 6 % večji premer, za 59 % krajši curek in 22 % počasnejši curek, strižno zgoščevana tekočina z ^ = 1,5 pa 33 % večji premer, 43 % daljši in 40 % počasnejši curek.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [L. Zagorec], 2022Language - slovenianCOBISS.SI-ID - 123486467
Author
Zagorec, Leon
Other authors
Šarler, Božidar
Topics
diplomske naloge |
nenewtonske tekočine |
dvofazni tokovi |
RDT |
mikro-curki |
plinsko fokusiranje |
thesis |
non-Newtonian fluids |
two-phase flow |
CFD |
micro-jets |
gas focusing
Library | Call number – location, accession no. ... | Copy status |
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Faculty of Mechanical Engineering, Lj. | UN 1727 IN: 80001727 |
available - reading room |
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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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Zagorec, Leon | |
Šarler, Božidar | 04101 |
Source: Personal bibliographies
and: SICRIS
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