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Effect of Surface Temperature on Fuel Drop Splashing on Solid Surfaces

Sreenivasan, A and Deivandren, S (2023) Effect of Surface Temperature on Fuel Drop Splashing on Solid Surfaces. In: 3rd National Aerospace Propulsion Conference, NAPC 2020, 17 - 19 December 2020, Virtual, Online at Bengaluru, pp. 555-567.

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Official URL: https://doi.org/10.1007/978-981-19-2378-4_32


Interaction of hydrocarbon fuel drops with high-temperature substrates is commonly encountered in combustion chambers, and such dynamics are relevant in design and optimization of fuel spray systems. Dynamics of fuel drops impacting on a heated solid surface in the splashing regime is investigated through high-speed imaging experiments. The effect of surface temperature in altering the impacting drop morphology and quantitative trends in splashing is studied in detail. The variation of splash behavior of drops impacting at three distinct drop Weber number (We) at different surface temperatures (TS) is considered. For a fixed We, an increase in the surface temperature causes a shift in the impact dynamics from splashing to spreading, which indicates higher threshold We at higher TS. The dynamics of the ejected liquid sheet and the spreading lamella post-impact are analyzed from the high-speed images to quantify the observed transitions.

Item Type: Conference Paper
Publication: Lecture Notes in Mechanical Engineering
Publisher: Springer Science and Business Media Deutschland GmbH
Additional Information: The copyright for this article belongs to the Springer Science and Business Media Deutschland GmbH.
Keywords: Atmospheric temperature; Drops; Dynamics; Fuels; High speed cameras; Morphology, Design and optimization; Drop splashing; Fuel sprays; Heated surfaces; High speed imaging; Highest temperature; Hydrocarbon fuel; Solid surface; Spray systems; Surface temperatures, Surface temperature
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 22 Aug 2022 09:26
Last Modified: 22 Aug 2022 09:26
URI: https://eprints.iisc.ac.in/id/eprint/76133

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