Lamberson S.E.,Jr. |
Lamberson S.E.,ASRC Federal InuTeq LLC |
Hallissyy B.P.,HPCMP CREATETM AV Quality Assurance Team
53rd AIAA Aerospace Sciences Meeting | Year: 2015
HPCMP CREATE™-AV Kestrel is a high-fidelity multi-physics software package created to reduce the cost of acquiring new fixed-wing aircraft for the United States Department of Defense by making accurate, timely, and easy-to-use simulations available to every participant in the acquisitions process. Past versions of Kestrel have been able to perform aeroelastic simulations by coupling Kestrel’s non-linear flow solver, KCFD, with a modal structural solver. The forces and displacements are interpolated between the two models using one of several spline interpolation schemes. The transfer of information occurs every sub-iteration, allowing the coupled simulation to maintain 2nd-order accuracy. Kestrel version 5 introduces the ability to perform aeroelastic simulations by coupling KCFD with a structural dynamics finite-element analysis package, Sierra/SD, developed at Sandia National Laboratories. The forces and displacements are interpolated between the two mod- els using the same spline interpolation schemes as when used with the modal structural solver, but the information exchange only occurs once each iteration, reducing the accuracy of the coupled simulation to 1st-order. This paper presents results using the modal structural solver for the Isogai 2D wing section, as well as both simulation approaches for the AGARD 445.6 aeroelastic wing, the Goland aeroelastic wing, and the High-Reynolds Number Aerostructural Dynamics (HIRENASD) wing. © 2015, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.