Nicholas F. Giannelis, Gareth A. Vio

DOI Number: N/A

Conference number: IFASD-2015-091

Advances in the field of fluid-structure interaction are improving the feasibility of fully coupled Computational Fluid Dynamics (CFD)/Computational Structural Mechanics (CSM) solutions in large scale aeroelastic problems. With such emerging technologies, validation of developed codes and software packages is imperative to ensure accurate and robust solution schemes. In this paper two fluid-structure interaction benchmark cases, the Turek-Hron channel flow and AGARD 445.6 weakened wing, are investigated using the ANSYS software suite with Multiphysics capabilities. An implicit, sub-iterative coupling scheme is adopted, with under-relaxation of the fluid load transfer to achieve tightly coupled solutions. Results obtained from the Turek-Hron test case indicate the individual structural and fluid solvers convey excellent agreement with the benchmark solution. The ANSYS System Coupling workflow is also found to effectively address large grid deformations in the Turek-Hron case and captures the majority of the AGARD flutter boundary well. Discrepancies are however found in addressing added-mass effects in the Turek-Hron benchmark. As these effects are not prevalent in flows of aeronautic significance, the ANSYS System Coupling package is found to be effective in addressing aeroelastic fluid-structure interaction problems.

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In Categories: 2. IFASD 2015, Aeroelastic Response & Stability
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