The prediction of aeroelastic effects is one of the key problems during the design process of an aircraft. One challenging aspect of this goal is to compute space and time-accurate fluid and structural interactions. In the partitioned coupling approach, well-established CFD and CSD (Computational Structural Dynamics) codes are used and integrated in a flexible software environment. One main focus of the present work is on the state and load transfer over nonconforming grids on the coupling interface. To fulfill conservation in the overall solution process, a weak formulation of the continuity conditions on the common interface based on a variational formulation of the scalar energy functional is used and Lagrange multipliers are introduced. Using Galerkin's method leads to a transfer scheme, which minimizes the L2 error norm. An extended transfer approach, which minimizes the more general Sobolev norm will be discussed and applied to aeroelastic problems and further the use of dual-Lagrange multipliers will be presented. To solve the coupled system in a partitioned way, iterative staggered as well as simple staggered time integration schemes will be introduced. Numerical results obtained from simulation of an oscillating one-dimensional plate in transonic flow and a three-dimensional wing example will be presented to demonstrate the applicability and performance of the concepts and to compare the properties of the different coupling techniques and transfer methods.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Coupling techniques for computational nonlinear transient aeroelasticity


    Additional title:

    Verfahrenskopplung für die numerische, nichtlineare, transiente Aeroelastizität


    Contributors:


    Publication date :

    2006


    Size :

    11 Seiten, 9 Bilder, 20 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Coupling techniques for computational non-linear transient aeroelasticity

    Unger, R / Haupt, M C / Horst, P | SAGE Publications | 2008


    Coupling techniques for computational non-linear transient aeroelasticity

    Unger, R. / Haupt, M.C. / Horst, P. | Tema Archive | 2008



    Computational Nonlinear Aeroelasticity

    P. S. Beran / R. D. Snyder | NTIS | 2008


    Computational Models for Nonlinear Aeroelasticity

    Carlson, Henry / Feng, James / Thomas, Jeffrey et al. | AIAA | 2005