Application of Taguchi Optimization Techniques to the Combustor Design Process

Abstract

This paper describes the application of Taguchi design of experiments (DOE) methods to the initial development of the T800-LHT-801 growth engine combustor design. The performance of a gas turbine combustor is strongly influenced by the primary zone aerodynamics and stoichiometry. The interactions between fuel spray and airflows through swirlers, primary jets, and dome surface cooling dominate the primary zone characteristics. Development of a robust combustor design requires a good knowledge of the relative sensitivities of these interactions. In this application, the Taguchi DOE method was used to efficiently determine the design parameters driving the combustor performance, while minimizing the number of tests. The improved design configuration resulted in 60 percent reduction in Lean Blow Out (LBO), 140°C reduction in peak wall temperature, and elimination of carbon formation potential at severe operating conditions.