Numerical study of the micro-jet formation in double flow focusing nozzle geometry using different water-alcohol solutions

Belšak, Grega (avtor), Bajt, Saša (avtor), Šarler, Božidar (avtor)

The purpose of this work is to determine, based on the computational model, whether a mixture of a binary liquid is capable of producing longer, thinner and faster gas-focused micro-jets, compared to the mono-constituent liquids of its components. Mixtures of water with two different alcohols, water + ethanol and water + 2-propanol, are considered. The numerical study of pre-mixed liquids is performed in the double flow focusing nozzle geometry used in sample delivery in serial femtosecond crystallography experiments. The study reveals that an optimal mixture for maximizing the jet length exists both in a water + ethanol and in a water + 2-propanol system. Additionally, the use of 2-propanol instead of ethanol results in a 34% jet length increase, while the jet diameters and velocities are similar for both mixtures. Pure ethanol and pure 2-propanol are the optimum liquids to achieve the smallest diameter and the fastest jets. However, the overall aim is to find a mixture with the longest, the smallest and the fastest jet. Based on our simulations, it appears that water + 2-propanol mixture might be slightly better than water + ethanol. This study reveals the dominant effect of liquid viscosity on the jet breakup process in a flow focusing nozzles operated under atmospheric conditions.

• Jezik: Angleški jezik
• Ključne besede: micro-jets, double flow focusing nozzle, water and ethanol mixture, water and 2-propanol mixture
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 11 str.
• Številčenje: Vol. 14, iss. 13, art. 3614
• PID: 20.500.12556/RUL-135639
• UDK: 532.525:519.6
• ISSN pri članku: 1996-1944
• DOI: 10.3390/ma14133614
• COBISS.SI-ID: 68503555
• Datum objave v RUL: 23.03.2022

Gradivo je del revije

• Naslov: Materials
• Skrajšan naslov: Materials
• Založnik: MDPI
• ISSN: 1996-1944
• COBISS.SI-ID: 33588485

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 01.07.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: mikro curki, šoba z dvojnim fokusiranjem, mešanice vode in etanola, mešanica vode in 2-propanola