Numerical simulation of flat plate trajectory using coupled CFD-RBD with dynamic meshing

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Authors
Sathyanarayana, Nidhi
Issue Date
2019-07
Type
Thesis
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en_US
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Abstract

Foreign object debris including bird and/or drone strike debris upon impact, may cause critical secondary damage to downwind aircraft surfaces. This debris is simplified in geometry to a flat plate and represented as a rigid body for better comparison with experimental results. In this study, a coupled computational fluid dynamics (CFD)-rigid body dynamics (RBD) solver with dynamic meshing was used for numerical analysis of the flat plate trajectory in a uniform flow field. The computed trajectory of the rectangular flat plate was validated against available experimental data and compared with existing numerical results. Less than 10% difference was observed between the simulated trajectory and the experimental results. Furthermore, a parametric analysis and probability analysis were conducted to identify the sensitivity of plate trajectory to initial conditions and to obtain a probability distribution of the location of the center of gravity of the plate at a distance downstream of the release location. The studies depict the sensitivity of the path taken by the plate to initial release orientation and to initial angular velocities of the plate. Additionally, flow field interaction studies were conducted by simulating the release of multiple plates in the domain to observe the effect of distance and mass on the plate trajectories. Finally, a single plate was released in the vicinity of a wing for a qualitative analysis of the effect of change in aerodynamic forces on the plate trajectory due to the presence of the wing.

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Thesis (M.S.)-- Wichita State University, College of Engineering, Dept. of Aerospace Engineering
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Wichita State University
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Copyright 2019 by Nidhi Sathyanarayana All Rights Reserved
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