Multi-disciplinary optimization design method, device and equipment for multistage axial flow expander

Abstract

The invention discloses a multi-disciplinary optimization design method, device and equipment for a multistage axial flow expander, and relates to the technical field of expander designs. The method comprises the steps: firstly carrying out the forward modeling of the multistage axial flow expander according to design parameters solved through reverse fitting, and obtaining a target model; defining corresponding boundary conditions for the fluid region model and the solid region model after grid division, calculating the fluid region model by using a CFD module, and performing multidisciplinary calculation on the solid region model by using a multidisciplinary calculation module containing strength, dynamic characteristics and the like; and finally, according to a plurality of target functions of the CFD calculation result and the multidisciplinary calculation result, performing multi-target optimization on two stages of blade grids in the multistage axial flow expander by using a genetic algorithm to obtain a forward bending and backward bending coupling rule of the blade and optimization information of distribution of the blade profile along the blade height. The multi-disciplinary optimization design of the multi-stage axial flow expander can be effectively carried out.

Description

technical field [0001] The present application relates to the technical field of expander design, in particular to a multidisciplinary optimal design method, device and equipment for a multi-stage axial flow expander. Background technique [0002] The expander is the core power component of the Rankine cycle, and researchers at home and abroad have conducted long-term and in-depth exploration and research. Axial flow expanders are widely used, and the applicable design parameters such as the type of working medium, pressure, temperature, speed, power, and number of blade stages are different. [0003] At present, the multi-disciplinary optimization design of high-power multi-stage axial flow expander is still blank, and the multi-disciplinary optimization design of multi-stage axial flow expander cannot be effectively carried out, so that the multi-stage axial flow expander cannot be well optimized. , which may increase the operating cost of the device and fail to achieve a...

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Problems solved by technology

[0004] In view of this, this application provides a multi-disciplinary optimal design method, device and equipment for a multi-stage axial flow expander, the main purpose of which is to solve the problem that the multi-disciplinary optimal design of a multi-stage axial flow expander cannot be effectively carried out in the current prior art , so that the multi-stage axial flow expander cannot obtain the technical problem of multidisciplinary optimization

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