Liquid jet interaction with supersonic crossflow

Singh, V and Joseph, NC and Thakor, N and Chaudhuri, S (2020) Liquid jet interaction with supersonic crossflow. In: AIAA Scitech 2020 Forum, 6 - 10 January 2020, Orlando.

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Abstract

Experiments were performed to study the evolution of a liquid jet from a customized injector with nozzle exit diameter of 1 mm, injected transversely into a supersonic crossflow of M∞=2.2. High-speed shadowgraphy, using a high-frequency nano-pulsed laser, LED, and a high-speed camera is used to capture and study the spray features, especially the ligaments formed on the spray periphery. These ligaments were tracked in consecutive images with the help of normxcorr2 (an inbuilt Matlab function) to find their speed. Fundamental questions on ligament formation, motion, and their breakup are addressed. The penetration of the spray was evaluated by averaging out edge positions of the spray, which was detected using a canny edge detection algorithm, over thousands of images. Spray trajectory was estimated for three different values of momentum flux ratio (q).

Item Type:	Conference Paper
Publication:	AIAA Scitech 2020 Forum
Publisher:	American Institute of Aeronautics and Astronautics Inc, AIAA
Additional Information:	The copyright for this article belongs to American Institute of Aeronautics and Astronautics Inc, AIAA.
Keywords:	Aviation; High speed cameras; Jets; Liquids; Supersonic aerodynamics, Canny edge detection; Consecutive images; Edge position; High frequency HF; Ligament formations; Matlab functions; Momentum flux ratios; Spray trajectory, Edge detection
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	08 Feb 2023 04:28
Last Modified:	08 Feb 2023 04:28
URI:	https://eprints.iisc.ac.in/id/eprint/80025

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