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Fluid dynamics of double flow-focusing nozzles [Elektronski vir] : a numerical studyZahoor, Rizwan ...In serial femtosecond crystallography (SFX) experiments performed at X-ray Free Electron Lasers (XFELs), micron-sized crystals are typically delivered into the X-ray beam interaction region via ... liquid microjets. In this study, we numerically investigated a double flow-focusing nozzle, in which a primary fluid with sample crystals is surrounded by a secondary fluid, both being accelerated by a co-flowing sheath of gas through a converging capillary. Our numerical simulations consider water and ethanol as primary and secondary liquids, respectively, with helium as the focusing gas. Water and ethanol tend to mix during this micro-jetting process, influencing the material properties of the resulting jets. Previous numerical investigations of such flow configurations have assumed either non-mixing liquids or thoroughly mixed water and ethanol solutions already at the capillary inlet. The present novel model considers coupled mass, momentum, and concentration equations for a mixture-formulated two-phase (gas-liquid) and two-component (water-ethanol) Newtonian incompressible system. The density, viscosity, and surface tension non-linearly depend on the mixture concentration. The OpenFOAM FVM-VOF framework solves the model with an extended "interFoam" solver to account for the binary system. The resulting stability, diameter, length, and velocity of the jet are simulated as a function of the operating process parameters.Vir: TFEC-2024 [Elektronski vir] : 9th Thermal and Fluids Engineering Conference (TFEC), April, 21-24, 2024, Corvallis, OR, USA (Str. 1537-1540)Vrsta gradiva - prispevek na konferenci ; neleposlovje za odrasleLeto - 2024Jezik - angleškiCOBISS.SI-ID - 200735747
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https://dl.astfe.org/conferences/tfec2024,60deb4033db4d0cd,498eb2c0030411b5.htmlPlačljiv dostop do polnega prispevka
DOI
Avtor
Zahoor, Rizwan |
Bajt, Saša |
Dobravec, Tadej |
Šarler, Božidar
Teme
serijska femtosekundna kristalografija |
fokusiranje z dvojnim tokom |
dolžina curka |
metoda končnih elementov |
volumen fluida |
serial femtosecond crystallography |
sample delivery |
double-flow-focusing |
jet length |
jet diameter |
jet velocity |
finite volume method |
volume of fluid
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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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Zahoor, Rizwan | 37776 |
Bajt, Saša | |
Dobravec, Tadej | 38848 |
Šarler, Božidar | 04101 |
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