Loading...
Please wait, while we are loading the content...
Similar Documents
Using an adjoint approach to eliminate mesh sensitivities in computational design
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Nielsen, Eric J. Park, Michael A. |
| Copyright Year | 2005 |
| Description | An algorithm for efficiently incorporating the effects of mesh sensitivities in a computational design framework is introduced. The method is based on an adjoint approach and eliminates the need for explicit linearizations of the mesh movement scheme with respect to the geometric parameterization variables, an expense that has hindered practical large-scale design optimization using discrete adjoint methods. The effects of the mesh sensitivities can be accounted for through the solution of an adjoint problem equivalent in cost to a single mesh movement computation, followed by an explicit matrix-vector product scaling with the number of design variables and the resolution of the parameterized surface grid. The accuracy of the implementation is established and dramatic computational savings obtained using the new approach are demonstrated using several test cases. Sample design optimizations are also shown. |
| File Size | 4035707 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20050060976 |
| Archival Resource Key | ark:/13960/t5fc01j7z |
| Language | English |
| Publisher Date | 2005-01-01 |
| Access Restriction | Open |
| Subject Keyword | Computer Programming And Software Flow Equations Algorithms Computational Fluid Dynamics Shape Optimization Aircraft Design Computerized Simulation Computational Grids Linearization Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
