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Reduced order models for nonlinear aerodynamics
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mahajan, Aparajit J. Bliss, Donald B. Dowell, Earl H. |
| Copyright Year | 1988 |
| Description | Reduced order models are needed for reliable, efficient and accurate prediction of aerodynamic forces to analyze fluid structure interaction problems in turbomachinery, including propfans. Here, a finite difference, time marching Navier-Stokes code is validated for unsteady airfoil motion by comparing results with those from classical potential flow. The Navier-Stokes code is then analyzed for calculation of primitive and exact estimates of eigenvalues and eigenvectors associated with fluid-airfoil interaction. A variational formulation for the Euler equations and Navier-Stokes equations will be the basis for reduction of order through an eigenvector transformation. |
| File Size | 290516 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19880013864 |
| Archival Resource Key | ark:/13960/t5jb1247z |
| Language | English |
| Publisher Date | 1988-05-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Airfoils Aerodynamic Forces Potential Flow Navier-stokes Equation Finite Difference Theory Predictions Eigenvalues Nonlinearity Time Marching Mathematical Models Eigenvectors Transformations Mathematics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
