Volume 1, 2009Progress in Propulsion Physics
|Page(s)||469 - 480|
|Section||Air-Breathing, Turbomachinery, and LAPCAT|
|Published online||16 September 2011|
Investigation of combustion in miniaturised combustor for application to micro gas turbines
Assessing the feasibility of combustion in miniaturised combustors (volume less than 1 cm3) is a key point for the development of micro gas turbines. This paper presents the results obtained in a combustion chamber operating with a hydrogen-air mixture. A stable combustion was obtained with an output power between 100 and 1200 W, for air mass flow rate from 0.1 to 0.5 g/s, and equivalence ratio between 0.3 and 0.7. Experimental results were obtained using thermocouples to measure temperature of the burnt gases at the outlet of the combustor, and information on combustion efficiency and output power was derived. In addition, laser-based measurements were performed using spontaneous Raman spectroscopy and Rayleigh scattering to determine radial profiles of temperature and main species concentrations at the outlet of the combustor.
© Owned by the authors, published by EDP Sciences, 2009