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Numerical Investigation of Effects of G-Jitter on Buoyant Laminar Diffusion Flame

Journal Article
01-13-02-0007
ISSN: 1946-3855, e-ISSN: 1946-3901
Published May 20, 2020 by SAE International in United States
Numerical Investigation of Effects of G-Jitter on Buoyant Laminar
                    Diffusion Flame
Sector:
Citation: Mondal, S., Kumar, N., and Ghosh, P., "Numerical Investigation of Effects of G-Jitter on Buoyant Laminar Diffusion Flame," SAE Int. J. Aerosp. 13(2):2020, https://doi.org/10.4271/01-13-02-0007.
Language: English

Abstract:

Numerical prediction of a confined, co-flowing, laminar jet diffusion flame has been investigated under sinusoidal “g-jitter” to describe the flame structure; this type of flame-body force interaction is typical of a microgravity environment such as in the spacecraft. We introduced g-jitter in the direction orthogonal to the fuel and air inflow. We show that the lower frequencies (0.1-0.5 Hz) of sinusoidal g-jitter significantly affected the flame geometry and behavior. The majority of the flame structure was found to oscillate directly in response to the imposed g-jitter. It has also been observed that nonlinearity in the response behaviors is more prominent in the reaction zone of the flame.