The combustion characteristics of the advanced vortex combustor (AVC) burning H2 fuel are studied numerically. First, using the 19-step reaction mechanism, the flame morphology of the pre-mixed H2/Air combustion under the different conditions, is computed. The calculation results are in agreement with experimental data from the literature. Second, a numerical model of a lean premixed H2/Air combustion is set up, based on the 19-step reaction mechanism. A numerical simulation is carried out to study the combustion characteristics of the AVC. The results show that the combustion can be steadily maintained, with the equivalence ratio of the H2/Air main flow kept at 0.45. At the same time, the total pressure loss coefficient is 2.77% and the combustion efficiency is 99.8%. The total pressure loss, vortex configuration and stability, combustion efficiency of the AVC are influenced by the equivalence ratio, total pressure and static pressure of main flow in the AVC.

Volume Subject Area:
Heat Transfer and Thermal Engineering
Topics:
Combustion, Combustion chambers, Fuels, Vortices, Pressure, Computer simulation, Flow (Dynamics), Flames, Stability
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