Publication detail
A dispersion of a droplet flow on crossing wires in an air counterflow
HÁJEK, O. CEJPEK, O. MALÝ, M. PRINZ, F. JÍCHA, M.
English title
A dispersion of a droplet flow on crossing wires in an air counterflow
Type
conference paper
Language
en
Original abstract
Liquid dispersion on a wire mesh is a phenomenon that is utilized in many industrial applications, such as rotating packed beds. It is a very simple method of liquid atomization without a need for complex nozzles. This research focuses on an elementary case of a liquid dispersion on a crossing of two wires. Experiments were carried out in a wind tunnel to elucidate the influence of counterflow air velocity on a liquid sheet and droplets. High-speed camera was used to capture the impact of droplets on the crossing. Images were then processed using MATLAB® addon PIVlab. The effect of the input parameters, including a liquid flow rate in the range of 3.8 to 12 kg/h and air flow velocity varying from 0 to 9 m/s on the angle and velocity of dispersed droplets downstream of the crossing, was investigated. Finally, a qualitative description of the dispersion was evaluated. Results show that with an increasing liquid flow rate, the droplets dispersed in a wider angle. On the other hand, the influence of the air counterflow is significant only for low liquid flow rates. The atomization rate, determined by the number of small droplets, was better for higher liquid flow rates.
English abstract
Liquid dispersion on a wire mesh is a phenomenon that is utilized in many industrial applications, such as rotating packed beds. It is a very simple method of liquid atomization without a need for complex nozzles. This research focuses on an elementary case of a liquid dispersion on a crossing of two wires. Experiments were carried out in a wind tunnel to elucidate the influence of counterflow air velocity on a liquid sheet and droplets. High-speed camera was used to capture the impact of droplets on the crossing. Images were then processed using MATLAB® addon PIVlab. The effect of the input parameters, including a liquid flow rate in the range of 3.8 to 12 kg/h and air flow velocity varying from 0 to 9 m/s on the angle and velocity of dispersed droplets downstream of the crossing, was investigated. Finally, a qualitative description of the dispersion was evaluated. Results show that with an increasing liquid flow rate, the droplets dispersed in a wider angle. On the other hand, the influence of the air counterflow is significant only for low liquid flow rates. The atomization rate, determined by the number of small droplets, was better for higher liquid flow rates.
Keywords in English
liquid dispersion, wire, liquid jet, high-speed velocimetry
Released
11.07.2022
Publisher
EPJ Web of Conferences
ISSN
2100-014X
Book
EFM21 – 15th International Conference “Experimental Fluid Mechanics 2021”
Volume
264
Pages from–to
1–5
Pages count
5
BIBTEX
@inproceedings{BUT173281,
author="Ondřej {Hájek} and Ondřej {Cejpek} and Milan {Malý} and František {Prinz} and Miroslav {Jícha},
title="A dispersion of a droplet flow on crossing wires in an air counterflow",
booktitle="EFM21 – 15th International Conference “Experimental Fluid Mechanics 2021”",
year="2022",
volume="264",
month="July",
pages="1--5",
publisher="EPJ Web of Conferences",
issn="2100-014X"
}