Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Simulation of Cup-Burner Flames in Microgravity



V Katta, F Takahashi, Gregory T. Linteris


The extinction process of cup-burner flames under normal-gravity conditions were previously studied. As the low-speed diffusion flames behave differently in microgravity compared to those on earth, it is important to understand the structureof cup-burner flame and its extinction characteristics under 0g conditions. A numerical study was performed in the present paper using a time-dependent, axisymmetric model and by incorporating detailed chemical kinetics of CH4 and O2. Calculations were performed for the cup-burner flame under different gravitational forces. It was observed that the cup-burner flame ceases to flicker under gravitational forces less than 0.5g. As the buoyancy force was reduced, the flame diameter increased, the tip of the flame opened, and the flame at the base became vertical. Through numerical experiments it was found that radiative heat loss was predominantly responsible for the extinction of flame in the tip region under 0g conditions. In contrast, 1g flames were not affected much by the radiative heat loss.
Joint Meeting of the Combustion Institute


carbon dioxide, Cup Burner, fire suppression, flame extinction, flame stabilization


Katta, V. , Takahashi, F. and Linteris, G. (2003), Simulation of Cup-Burner Flames in Microgravity, Joint Meeting of the Combustion Institute, [online], (Accessed February 28, 2024)
Created May 31, 2003, Updated October 12, 2021