A micro annular combustor was designed based on research both inland and oversea

and simulated the combustion in the annual combustor.And then

according to the simulation result

the design of combustor was optimized and re-computed.All case including chemical reaction

heat radiation

evaporating of fuel and secondary breakup of spray was comprised in numerical simulation

the boundary condition of inlet was gained through computing and the parameter of spray was gained through experiment.The result of computation can reflect the reality case exactly.At last

the numerical simulation result of two combustor was compared

the result indicate the optimized design is reasonable

fuel can combusted sufficiently in chamber and the performance parameter is satisfied the design requirement.All data can provide numerical foundation for better performance in combustion chamber.