Abstract
The ship gas turbine exhaust ejector is the central component parts, which can reduce or even eliminate the infrared radiation signal of ship gas turbine exhaust systems. In the design of exhaust ejector, structure forms of nozzle have a significant influence on its ejector effect. A rational nozzle, which is made to work in a narrow space and reduce the exhaust temperature effectively while minimizing the impact of flow of gas turbine body, has always been a focus and difficulty. Based on summary of the work of predecessors, an independent innovation is proposed in the article. The new design improves the performance by changing transitional form of nozzle and its angular size. Meanwhile, the performance of the design has been predicted and the structure has been optimized by CFD method.
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