Browse Publications Technical Papers 01-13-02-0007
2020-05-20

Numerical Investigation of Effects of G-Jitter on Buoyant Laminar Diffusion Flame 01-13-02-0007

This also appears in SAE International Journal of Aerospace-V130-1EJ

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.

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