Transonic wing flutter predictions by a loosely-coupled method

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• 作者：Xiang Zhao^a ; Yongfeng Zhu^b ; ^c ; Sijun Zhang^d ; ^{sijun.zhang@esi-group-na.com}
• 关键词：Aero-elasticity ; Fluid-structural interactions ; Computational Fluid Dynamics (CFD) ; Computational Structural Dynamics (CSD) ; Loosely-coupled method ; Wing flutter
• 刊名：Computers and Fluids
• 出版年：2012
• 期刊代码：37_00457930
• 类别：et
• 出版时间：15 April, 2012
• 卷：58
• 期：Complete
• 页码：45-62
• 文件大小：4542 K

摘要

This paper presents transonic wing flutter predictions by coupling Euler/Navier-Stokes equations and structural modal equations. This coupling between Computational Fluid Dynamics (CFD) and Computational Structural Dynamics (CSD) is achieved through a Multi-Disciplinary Computing Environment (MDICE), which allows several computer codes or 鈥榤odules鈥?to communicate in a highly efficient fashion. The present approach offers the advantage of utilizing well-established single-disciplinary codes in a multi-disciplinary framework. The flow solver is density-based for modeling compressible, turbulent flow problems using structured and/or unstructured grids. A modal approach is employed for the structural response. Flutter predictions performed on an AGARD 445.6 wing at different Mach numbers are presented and compared with experimental data.