Multi-target fast optimum design method of pumping and spraying propeller

Abstract

The invention provides a multi-target fast optimum design method of a pumping and spraying propeller. The method comprises the following steps that load numerical values of an inlet and an outlet of impeller blades are determined; a parametrization design model of an impeller and guide vane blade loads is established; overall fast search of design variables is completed through a genetic optimization algorithm, and design samples with different blade load distributions are generated; design of the impeller blades is completed through a ternary inverse problem design method, and impeller outlet speed serves as a guide vane inlet boundary condition to complete matching design of guide vanes and the impeller; a wing section structure with good hydrodynamic performance is adopted for a guide pipe outer molded line, and a linear structure is adopted for a guide pipe inner molded line to guarantee the smoothness of a pumping and spraying internal cross section of passage; hydrodynamic performance calculation of a design sample of the pumping and spraying propeller is completed, and efficiency and cavitation performance indexes are quantized; an optimal design sample is selected; performance testing of the optimal design sample is completed through a model experimental method, and effectiveness of the design result is verified. According to the method, optimum design work hard for manpower to complete is completed.

Description

technical field [0001] The invention belongs to the application field of underwater propellers, and in particular relates to a multi-objective rapid optimization design method for pump jet propellers. Background technique [0002] The demand for high speed and low radiation noise performance of torpedoes in modern warfare has become increasingly prominent. As the core component of torpedo power, the propeller has played an important role in the technological changes of torpedoes in the past dynasties. In particular, at high speeds, propeller noise becomes the primary noise source because the rate at which propeller noise increases with rotational speed is much higher than other mechanical noise sources. Due to the advantages of high propulsion efficiency, strong anti-cavitation ability and low radiation noise, the pump waterjet propulsion has been widely used in the propulsion of foreign underwater vehicles. However, due to military and technical secrecy reasons, there are ...

AI Technical Summary

Problems solved by technology

However, due to military and technical confidentiality reasons, there are very few literatures published on the optimal design method of high-performance pump injection abroad, and the published literature basically focuses on experimental research and simulation calculation methods.

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