当前位置: X-MOL 学术Proc. Inst. Mech. Eng. E J. Process Mech. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
An efficient methodology to generate optimal inputs for the preliminary design of centrifugal compressor impellers
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering ( IF 2.4 ) Pub Date : 2020-05-29 , DOI: 10.1177/0954408920927658
Lakhdar Bourabia 1 , Smail Khalfallah 1 , Mahfoudh Cerdoun 1 , Taha Chettibi 2
Affiliation  

Preliminary design of centrifugal compressors is an emphasized step, which initiates the design process. Even with the use of quick analysis methods such as one-dimensional models, preliminary design still occupies a substantial part of the total design time. Among the factors that can lengthen this time or even cause the design failure is the inappropriate selection of the design input parameters. The present paper proposes a methodology to generate optimal inputs for the preliminary design, which reduces the design time and optimizes its overall performance. This is achieved, firstly, by performing an aerothermodynamic analysis that defines the appropriate input parameters, which will be used by a preliminary design code. This analysis has allowed identifying three pilot parameters (inlet relative Mach number, work input factor, and slip factor) to guide the generation of adequate input parameters. This input parameter generator, which reduces considerably the failure rate, is then exploited efficiently in an optimization process considering the pilot parameters as decision variables. Therefore, the proposed input parameter generator is coupled with a preliminary design code and an optimization algorithm. The proposed input parameter generator was validated on four existing compressors, showing a gain of more than 90% of the design time. Mainly, the proposed optimization has created a preliminary design trade-off having the target requirements and with optimized off-design performance.

中文翻译:

为离心式压缩机叶轮的初步设计生成最佳输入的有效方法

离心式压缩机的初步设计是一个重点步骤,它启动了设计过程。即使使用一维模型等快速分析方法,初步设计仍占总设计时间的很大一部分。可能延长此时间甚至导致设计失败的因素之一是设计输入参数选择不当。本文提出了一种为初步设计生成最佳输入的方法,从而减少了设计时间并优化了其整体性能。首先,这是通过执行定义适当输入参数的空气热力学分析来实现的,这些参数将由初步设计规范使用。该分析允许识别三个试点参数(入口相对马赫数、功输入因子、和滑动系数)以指导生成足够的输入参数。该输入参数生成器可显着降低故障率,然后在将导频参数视为决策变量的优化过程中得到有效利用。因此,所提出的输入参数生成器与初步设计代码和优化算法相结合。建议的输入参数生成器在四台现有压缩机上得到验证,显示设计时间的增益超过 90%。主要是,建议的优化已经创建了具有目标要求和优化的非设计性能的初步设计权衡。然后在将导频参数视为决策变量的优化过程中进行有效利用。因此,所提出的输入参数生成器与初步设计代码和优化算法相结合。建议的输入参数生成器在四台现有压缩机上得到验证,显示设计时间的增益超过 90%。主要是,建议的优化已经创建了具有目标要求和优化的非设计性能的初步设计权衡。然后在将导频参数视为决策变量的优化过程中进行有效利用。因此,所提出的输入参数生成器与初步设计代码和优化算法相结合。建议的输入参数生成器在四台现有压缩机上得到验证,显示设计时间的增益超过 90%。主要是,建议的优化已经创建了具有目标要求和优化的非设计性能的初步设计权衡。
更新日期:2020-05-29
down
wechat
bug