@InProceedings{DiasMachAndrCost:2020:HyEtAt,
author = "Dias, Gabriel Silva and Machado, Danilo Almeida and Andrade,
Jos{\'e} Carlos de and Costa, Fernando de Souza",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Hydrous Ethanol Atomization by Impinging Jets",
booktitle = "Proceedings...",
year = "2020",
organization = "Brazilian Congress of Thermal Sciences and Engineering, 18.
(ENCIT)",
keywords = "Impinging jets, Atomization, Ethanol, Green propellant, Spray.",
abstract = "Liquid propellant engines are the most used configuration in
rocket propulsion systems. Ethanol was extensively used as liquid
fuel in rocket propulsion systems, it has the advantage of be safe
to handle and a green propellant. Impinging injectors are widely
used due their easy of manufacture and efficiency. This
experimental work atomizes liquid hydrous ethanol using impinging
jets. Shadow images were taken in order to analyze the free jet
and the sheet formed under a range of jet velocities. The free jet
flow in ambient air 6 mm downstream the exit was turbulent for u >
5 m/s and the registered regimes of formed liquid sheet went from
closed stable sheet to impact wave. A brief analysis about
coalescence and secondary droplet breakup was done based on
literature simplified models. A Spraytec laser diffraction system
was used to obtain representative diameters and droplet size
distributions. Representative diameters presented no clear trend
with jet Reynolds number, however it SMD and Dv10 seemed to
decrease with increase of impingement angle. Bimodal particle size
distributions presented a detachment trend of the two droplet
populations as the jet velocity increased, however the population
of larger droplets tends to increase in volume frequency, such
effect may be a result of both secondary atomization together with
coalescence.",
conference-location = "Online",
conference-year = "16-20 nov.",
label = "lattes: 4727150274528460 2 DiasMachAndrCost:2020:HyEtAt",
language = "en",
targetfile = "dias_hydrous.pdf",
urlaccessdate = "11 maio 2024"
}