Aerodynamic design and validation strategy on hole-shaped pre-swirl nozzles
Based on the product development process of"function analysis,design definition,and validation",the aerodynamic design and validation of hole-shaped pre-swirl nozzles are introduced.Function analysis of the pre-swirl nozzle is completed by view point analysis,with the system boundaries,stakeholders,and functions defined.Requirement analysis of the pre-swirl nozzle aerodynamic design is carried out to confirm the integrity and rationality of design requirements.In the process of design definition,three different types of pre-swirl nozzles are compared,whose advantages and disadvantages are analyzed to determine the final configuration of the pre-swirl nozzle.An aerodynamic profile of the hole-shaped pre-swirl nozzle is generated based on the second-ordered Bézier curve.By design failure mode and effect analysis(DFMEA),key characteristics related to aerodynamic performance of the pre-swirl nozzle are identified,and a pre-swirl nozzle validation process that covers the component test,sub-system test,and core engine/engine test is established.
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