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Fluid-structure interaction modeling with nonmatching interface discretizations for compressible flow problems: simulating aircraft tail buffeting
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DOI：10.1007/s00466-023-02436-2.png)
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Abstract
En 中文
Many aerospace applications involve complex multiphysics in compressible flow regimes that are challenging to model and analyze. Fluid-structure interaction (FSI) simulations offer a promising approach to effectively examine these complex systems. In this work, a fully coupled FSI formulation for compressible flows is summarized. The formulation is developed based on an augmented Lagrangian approach and is capable of handling problems that involve nonmatching fluid-structure interface discretizations. The fluid is modeled with a stabilized finite element method for the Navier-Stokes equations of compressible flows and is coupled to the structure formulated using isogeometric Kirchhoff-Love shells. To solve the fully coupled system, a block-iterative approach is used. To demonstrate the framework's effectiveness for modeling industrial-scale applications, the FSI methodology is applied to the NASA Common Research Model (CRM) aircraft to study buffeting phenomena by performing an aircraft pitching simulation based on a prescribed time-dependent angle of attack.
Keywords:
Fluid-structure interaction
Compressible flow
Isogeometric shell
Nonmatching interface
Aircraft buffeting
NASA Common Research Model
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