Loading...

A new reduced-order modeling approach based on fluid eigenmodes and boundary element method

Behbahani Nejad, M ; Sharif University of Technology | 2005

177 Viewed
  1. Type of Document: Article
  2. DOI: 10.2514/6.2005-5099
  3. Publisher: American Institute of Aeronautics and Astronautics Inc , 2005
  4. Abstract:
  5. This paper presents a new reduced-order modeling approach based on boundary element method. In this approach the eigenvalue problem of the unsteady flows is defined based on the unknown wake singularities. By constructing this reduced-order model, the body quasi-static eigenmodes are removed from the eigensystem and it is possible to obtain satisfactory results without static correction technique when enough eigenmodes are used. In addition to the conventional method, Eigenanalysis and reduced-order modeling of unsteady flows over a NACA 0012 airfoil and a wing with NACA 0012 section are performed using this new ROM method. Numerical examples are presented that demonstrate the accuracy and computational efficiency of present method. Copyright © 2005 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved
  6. Keywords:
  7. Boundary element method ; Computational methods ; Eigenvalues and eigenfunctions ; Mathematical models ; Unsteady flow ; Wakes ; Eigenanalysis ; Fluid eigenmodes ; Quasi-static eigenmodes ; Wake singularities ; Fluid dynamics
  8. Source: 23rd AIAA Applied Aerodynamics Conference, Toronto, ON, 6 June 2005 through 9 June 2005 ; Volume 2 , 2005 , Pages 1245-1252 ; 10485953 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0889974606000740