An Output-Based Adaptive and Higher-Order Method for a Rotor in Hover
- Resource Type
- Authors
- James Modisette; David Darmofal
- Source
- 26th AIAA Applied Aerodynamics Conference.
- Subject
- Engineering
Discretization
business.industry
Rotor (electric)
Mechanical engineering
Degrees of freedom (mechanics)
Finite element method
Euler equations
law.invention
symbols.namesake
Control theory
Discontinuous Galerkin method
Mesh generation
law
symbols
Polygon mesh
business
ComputingMethodologies_COMPUTERGRAPHICS
- Language
A high-order discontinuous Galerkin finite element discretization and output-based adaptation scheme for the compressible Euler equations are presented and applied to an isolated rotor in hover. A simplex cut-cell mesh generation technique is used to support robust and autonomous creation of higher-order meshes. The calculations are performed using a parallel implementation of the DG discretization and the results are compared to experimental data. As accurate simulation of rotorcraft wakes and blade-vortex interactions continues to be a challenge, the output-based adaptation scheme is used with thrust as the output of interest to refine the mesh. The result is a solution with less than three million degrees of freedom that is capable of preserving a rotor tip vortex for three and a half revolutions.