The reaction characteristics of a kind of twins annual premixed swirler(TAPS) combustor were studied using No.0 diesel as fuel in order to satisfy the requirement of low emission of gas turbine for ground transportation. The results showed that

the total pressure recovery coefficient of the TAPS combustor reached more than 0.97

higher than classical single annual combustor due to the changes in air distribution characteristics. The minimum atmospheric ignition fuel-air ratio over 0.05 was higher than that using the aviation kerosene as fuel with the same combustor structure due to the influence of viscosity and flash point

but idle lean blow-out limit had no obvious change between 0.006 and 0.008. The fuel mixing was nonuniform due to pressure atomization at the pilot stage

which caused the lower combustion efficiency 0.99

but the outlet temperature distribution factor was less than 0.25

which can meet the requirement. For the pollution emissions

NOx dry volumn fraction was 1.76×10-5 significantly lower than the required index

but the CO dry volumn fraction was higher up to 5.02×10-4 due to use of the premixed pre-evaporation combustion. Through comprehensive comparison of various performance indicators

the combustor has advantages in ignition

lean blow-out

combustor outlet temperature distribution and NOx emissions

but the lower combustion efficiency and higher CO emission are still problems to be solved.