Design analysis and sizing of a circulation controlled CFRP wing with Coandǎ flaps via CFD–CSM coupling

Sommerwerk, Kay; Haupt, Matthias

doi:10.1007/s13272-013-0093-9

Cited by 10 publications

(5 citation statements)

References 8 publications

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“…This study employs the coupling environment ifls, which has already been used to model various multi-physics problems (see e.g., [25][26][27]). Ifls follows a modular approach that allows to couple two or more black-box solvers in a partitioned way.…”

Section: Numerical Simulation Frameworkmentioning

confidence: 99%

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Challenges of Fully-Coupled High-Fidelity Ditching Simulations

et al. 2019

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An important element of the process of aircraft certification is the demonstration of the crashworthiness of the structure in the event of an emergency landing on water, also referred to as ditching. Novel numerical simulation methods, that incorporate the interaction between fluid and structure, open up a promising way to model ditching in full scale. This study focuses on two main issues of high-fidelity ditching simulations: the development of a suitable fluid-structure coupling framework and the generation of the structural model of the aircraft. The first issue is addressed by implementing a partitioned coupling approach, which combines a finite volume hydrodynamic fluid solver as well as a finite element structural solver. The developed framework is validated by means of two ditching-like experiments, which consider the drop test of a rigid cylinder and a deformable cylindrical shell. The results of the validation studies indicate that an alternative to the standard Dirichlet-Neumann partitioning approach is needed if a strong added-mass effect is present. For the full-scale simulation of aircraft ditching, structural models become more complex and have to account for damage. Due to its high localization, the damage creates large differences in model scale and usually entails severe non-linearities in the model. To address the issue of increasing computational effort for such models, the process of developing a multi-scale model for the simulation of the failure of fuselage frames is presented.

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Section: Numerical Simulation Frameworkmentioning

confidence: 99%

“…The fluid equations are solved in the Arbitrary Lagrangian-Eulerian (ALE) form to account for mesh movement in the convective term. The communication between ifls and OpenFOAM is achieved by using a socket- [25][26][27]).…”

Section: Numerical Simulation Frameworkmentioning

confidence: 99%

Challenges of Fully-Coupled High-Fidelity Ditching Simulations

et al. 2019

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“…Its degrees of freedom are the vertical translation and the rotation about the reference point. The reference point is at a quarter of the chord length, which is set to 3.428 m, the mean aerodynamic chord length of the reference aircraft [8,13].…”

Section: 1 Modelmentioning

confidence: 99%

“…The structural parameters are roughly derived from the wing model described in [13] at a dimensionless wingspan of g ¼ 0:5. The mass m describes the mean mass per unit length derived from the wing mass.…”

Section: 1 Modelmentioning

confidence: 99%

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Flutter of circulation-controlled wings

Dinkler

Krukow

2015

CEAS Aeronaut J

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The application of active circulation control gives rise to a substantial increase in lift compared to conventional wings. Initial studies of the aeroelastic behaviour of a circulation-controlled wing have shown additional instabilities due to the active circulation control. Besides the heave flutter phenomenon, further investigation also reveals a destabilising effect of the aerodynamic derivatives related to pitch, which is peculiar to circulationcontrolled wings. The goal of the present paper is to investigate these phenomena in detail.

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