推进系统选优的定量分析及数值模拟  

Quantitative analysis and numerical simulation of optimization of a propulsion system

作　　者：张伟[1] 蔡元虎[1] 苏三买[1] 屠秋野[1] 

机构地区：[1]西北工业大学动力与能源学院,西安710072

出　　处：《航空动力学报》2010年第11期2450-2456,共7页Journal of Aerospace Power

基　　金：国家自然科学基金(50906071);航空科学基金(2008ZB53014);陕西省自然基金(SJ-08-ZP06)

摘　　要：利用运筹学中的层次分析方法,建立了该问题的层次模型,依据各层元素对上层元素的贡献大小,请专家和用户打分构造判断对比矩阵,形成原始计算数据,在对数据进行校验后,计算得到候选发动机优劣的定量比较结果,不仅使复杂的、难以定量描述的民用航空发动机选优问题变成简便的定量分析和数值模拟,而且可以获得各候选发动机细节方面的优缺点,对发动机生产商改进产品弱点,提高其竞争力亦有重要的意义.A method for selecting an optimal civil aero-engine was proposed in this paper.This method employed the analytic hierarchy process（AHP） methodology in operational research to establish a civil aero-engine optimization hierarchy model.The original data indicating the contribution of all elements in each layer were determined by experts and engine customers.Finally,the quantitative result for evaluating the best aero-engine was obtained after the original data were checked for the consistency.The civil aero-engine selection problem is complex and difficult to quantitate,however,this method makes it possible to analyze quantitatively and simulate numerically in a simple way.Furthermore,the details of the candidate aero-engines can be revealed,thus providing a guide to the engine manufacturers for improvement of their design.

关 键 词：民用航空发动机 多目标决策 层次分析法 数值模拟 定量分析 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]