基于网格重生成的涡轮叶片变形传递方法
Turbine blade displacement transfer based on mesh regeneration method
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摘要: 在涡轮叶片多学科优化中需要在气动模型和结构模型之间进行耦合信息(气压、温度和变形等数据)传递,来考虑学科耦合的性质.采用修正几何外形和网格重生成的方法实现了叶片结构变形向气动模型传递.传递时在叶片几何模型上增加若干外形控制线,叶片的外形由这些控制线的形状来决定.根据叶片结构变形,调整控制线节点位置坐标,以修改叶片外形控制线的形状,可以实现变形向叶片几何模型的传递.进一步,重新生成气动网格,可以得到结构变形后叶片的气动网格模型.Abstract: In multi-disciplinary design optimization(MDO) of turbine blades,the coupling data between aerodynamics and structural mechanics models must be transferred to consider the multi-disciplinary coupling property.Amesh-regeneration method was proposed to transfer displacement in this paper.Agroup of lines were added on blade surface,and the shape of blades was determined by the shape of these control lines.According to the displacement of blade structure,the position coordinate of the nodes of the lines was adjusted to modify the shape of the blade's control lines,thus achieving the displacement transfer towards geometric model of blade.By re-meshing,the CFDmesh of the deformed blade was generated.
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[1] Talya S S.Multidisciplinary design optimization procedure for turbo-machinery blades and sensitivity analysis technique for aerospace applications[D].Ph.D.Dissertation,Arizona State,US:Arizona State University,May 2000. [2] Martin T J.Computer-automated multidisciplinary analysis and design optimization of internally cooled turbine blades[D].Pennsylvania State,US:Thesis of Pennsylvania State University,2001. [3] Houstis E N,Catlin A C.Gasturbnlab:A multidisciplinary problem solving environment for gas turbine engine design on a network of non-homogeneous machines[J].Journal of Computational and Applied Mathematics,2002,149:83-100. [4] Alonso J J.pyMDO:A framework for high-fidelity multidisciplinary optimization[R].AIAA-2004-4480. [5] Walsh J L.Multidisciplinary high-fidelity analysis and optimization of aerospace vehicles,Part Ⅰ:Formulation[R].AIAA-2000-0418. [6] Walsh J L.Multidisciplinary high-fidelity analysis and optimization of aerospace vehicles,Part Ⅱ:Preliminary results[R].AIAA-2000-0419. [7] Haimea R.Merchant A.The synergistic use of CAD for tightly coupled analysis and design[R].AIAA-2005-4986. [8] Cebral J R,Lohner R.Conservative load projection and tracking for fluid-structure problems[R].AIAA-96-0797. [9] SmithMJ,CesnikCES,HodgesDH,et al.Anevaluation of computational algorithms to interface between CFD and CSD methodologiea[R].AIAA-96-1400-CP. [10] Cebral J R,Lohner R.Fluid-structure coupling:extensions and improvements[R].AIAA-97-0858. [11] Guruwamy G.A new modular approach for tightly coupled fluid/structure analysis[R].AIAA-2004-4547. [12] Sarmareh J A.A unified approach to modeling multidisciplinary interactions[R].AIAA-2000-4704. [13] Book S.Approach for coupled heat transfer/heat flux ealeulations[DB/OL].RTO-AVT Symposium on Advanced Flow Management:Part B-Heat Transfer and Cooling in Propulsion and Power Systems.7-11 May,2001,Loen,Norway.vhttp://www.stormingmedia.us/58/5829/A582914,html [14] Samareh J A.Multidiseiplinary aerodynamic-structural shape optimization using deformation (MASSOUD)[R].AIAA-2000-4911. [15] Hsu S Y,Chang C L,Samareh J A.A simplified mesh deformation method using commercial structural analysis software[R].AIAA-2004-4409. [16] Samareh J A.Aerodynamic shape optimization based on free-form deformation[R].AIAA-2004-4630. [17] Floater M S.Parametrization and smooth approximation of surface triangulations[J].Computer Aided Geometric Design,1977 (14):231-250. [18] 王婧超,李立州,岳珠峰.自由网格变形技术在涡轮叶片多学科设计优化过程中的应用[J].飞机设计,2006,(3):40-43.WANG Jingchao,LI Lizhou,YUE Zhufeng.Free-form deformation application in multidisciplinary design optimization procedure of turbine blades[J].Design of Aircraft,2006(3):40-43.
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