topology of hydrogen flames using tomographic chemiluminescence

Topology of hydrogen flames using tomographic chemiluminescence

 

Hydrogen combustion is expected to play an important role in the upcoming energy transition. However, the behavior of hydrogen flames differs strongly from that of conventional natural gas flames due to the high reactivity and diffusivity of hydrogen. To gain a better physical insight into the structure of hydrogen flames there is a strong need for time-resolved and three-dimensional data. This project focuses on the flameā€™s chemiluminescence (spontaneous emission at wavelengths in visible and UV range of the spectrum) to obtain information on the structure of hydrogen flames. When the chemiluminescence is simultaneously captured by a large number of cameras it is possible to use computed tomography to reconstruct the time dependent and three-dimensional shape of the chemiluminescence distribution in the flame. Suitable tomographic reconstruction software is available within the group. These new three-dimensional reconstructions provide information on important physical phenomena in the hydrogen flame such as the local extinction and re-ignition, heat release, and flame propagation speeds.

References:

X. Li and L. Ma, Volumetric imaging of turbulent reactive flows at kHz based on computed tomography, Optics Express, Vol. 22, No. 4, 2014.

N. A. Worth and J. R. Dawson, Tomographic reconstruction of OH* chemiluminescence in two interacting turbulent flames, Meas. Sci. Technol., Vol. 24, No. 2, 024013, 2013.

M.Sc. project in combustion

Chair:
Fluid Mechanics

Involved People:
M.J. Tummers, G.E. Elsinga