| 摘要: |
| 针对结构和流场相互影响的流固耦合多学科设计问题,提出一种耦合量曲面拟合的协作优化方法。其特点是用曲面函数拟合结构-流场界面耦合量(温度、气压和变形)的空间分布,并用曲面拟合参数的一致性代替原有耦合量界面分布的学科一致性。涡轮叶片的算例表明:曲面拟合函数可以表征结构和流场界面的耦合量;用拟合参数的一致性代替界面直接耦合是可行的;该协作优化方法是可以用来解决流固耦合多学科优化设计问题的。 |
| 关键词: 多学科设计优化+ 协作优化+ 流固耦合+ 曲面拟合+ |
| DOI： |
| 分类号:V232.4 |
| 基金项目:国家自然科学基金(NSFC10572117);新世纪优秀人才支持计划基金(NCET-05-0868) |
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| Collaborative optimization method for fluid-solid coupling problem of turbine blades |
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LI Li-zhou1,2, WANG Jing-chao3, L Zhen-zhou1, YUE Zhu-feng3
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1.School of Aeronautics,Northwestern Polytechnincal Univ.,Xi’an 710072,China;2.School of Mechatronics,North Univ.of China,Taiyuan 030051,China;3.School of Mechanics Engineering and Civil Architecture,Northwestern Polytechnincal Univ.,Xi’an 710072,China
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| Abstract: |
| A collaborative optimization(CO) method is proposed for fluid-solid multidisciplinary design optimization(MDO) problems,in which coupling data of interface projected in parametric space is fitted by Bi-cubic B-spline surfaces for transferring between the disciplinary models.The direct coupling of fluid-solid interface is replaced by consistent conditions of the parameters of the Bi-cubic B-spline surfaces,which fitted for each discipline and called load surfaces here.Then,these consistent conditions are integrated in the collaborative optimization system of the fluid-solid problems.An example of turbine blade optimization is provided and the results show: the load surfaces are capable of representing coupling data of interface;the consistent condition of the parameters of load surfaces can replace the direct coupling of interface;the proposed method can be used in fluid-solid coupling problems. |
| Key words: Multidisciplinary design optimization+ Collaborative optimization+ Fluid-solid coupling+ Surface fitting+ |
