SHEN Yazhou, FU Zhongguang, SHI Li, et al. Numerical simulation of influence of equivalence ratio on combustion and NOx formation in a DLE combustor[J]. Thermal power generation, 2017, 46(7): 46-53.
SHEN Yazhou, FU Zhongguang, SHI Li, et al. Numerical simulation of influence of equivalence ratio on combustion and NOx formation in a DLE combustor[J]. Thermal power generation, 2017, 46(7): 46-53.DOI:
The influence of flow field structure and equivalence ratio on combustion and pollutant emission characteristics of a dry low emission(DLE) gas turbine combustor is numerically studied. The results show that
the high temperature flow in the central recirculation establishes a firm aerodynamic base for flame stabilization. With an increase in the equivalence ratio
the flow field inside the combustor barely changes. The bulk radical velocity increases slightly
while the range of the recirculation areas barely changes. The temperature field changes greatly. The high temperature area expands significantly
and the bulk temperature rises clearly. The NO_x formation rate and NO_x concentration at the combustor outlet both shows an obvious increase.