A novel method for multidisciplinary automatic optimization design of an axial flow pump impeller

Abstract

A novel method for multidisciplinary automatic optimization design of an axial flow pump impeller belongs to that technical field of water conservancy engineering and power engineering, and the impeller of the axial flow pump adopts a cooperative optimization algorithm between water conservancy performance and structural performance; a discipline analysis method adopts CFD numerical simulation computation, which has high design precision and avoids the traditional optimization method based on human experience. Piano multidisciplinary optimization design software is used to establish a multidisciplinary automatic optimization design platform to realize multidisciplinary automatic optimization design of an axial flow pump. The method ensures that the design head and design flow do not changeunder the blade design conditions, that is to say, ensures that the impeller design specific speed is consistent; in the aspect of mechanical performance, the blade stress and vibration displacementare small under the condition of the highest running head of axial flow pump. In the aspect of hydraulic performance, the impeller of axial flow pump has a wide range of high efficiency, and the cavitation performance of the pump is also taken into account, which makes the impeller with optimized design have higher design efficiency and lighter blade quality.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering and power engineering, and relates to an optimization design method of an axial flow pump, in particular to a novel multidisciplinary automatic optimization design method of an axial flow pump impeller. Background technique [0002] Multidisciplinary Optimal Design (MDO) is the newest and most active field in the current optimization design research of complex systems. It is mainly used in aerospace, torpedo missile design and other fields. Machine blade optimization design. At present, with the rapid development of computational fluid dynamics and computational structural mechanics, research on the optimal design of axial flow pump impellers in the disciplines of hydraulic performance and structural performance is relatively abundant, and many achievements have been made. However, this traditional single-subject optimization analysis method actually ignores the interaction ...

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Problems solved by technology

[0003] The purpose of the present invention is to ignore the interaction and mutual influence between the hydraulic design and the structural design in the traditional single-subject optimization analysis method, which fails to achieve a real coordinated design, and the reliability and accuracy of the optimal design results are not enough. In order to further improve the overall performance of the pump, a new multidisciplinary automatic optimization design method for the axial flow pump impeller is proposed through the two disciplines of hydraulics and structure for the axial flow pump impeller.

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