The wall temperature distribution of a can-annular reversed combustor flame tube was obtained and analyzed to ameliorate the flame tube design

since the flame tube was often ablated partly and cracked when a gas turbine running. The distributions of flow field

temperature field and wall temperature were obtained by the method of three-dimensional numerical simulation of coupled heat transfer

while heat conduction and radiation of solid

heat convection between gas and solid

radiation of flame and flue gas were took into account. The simulation result was checked by experiments

so the temperature distribution of flame tube can be predicted with the method of three-dimensional numerical simulation of coupled heat transfer. According to the simulation result

the wall temperature of combustor flame tube doesn't exceed the design value 1223K

but the temperature and temperature gradient are relatively high at several primary holes and the joint of the flame crossover tube and flame tube

and the cooling design of these parts needs to be improved.