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Reduced-order modeling of unsteady flows without static correction requirement

Behbahani Nejad, M ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.2514/1.7549
  3. Publisher: American Institute of Aeronautics and Astronautics Inc , 2005
  4. Abstract:
  5. A new reduced-order modeling approach is presented. This approach is based on fluid eigenmodes and without using the static correction. The vortex lattice method is used to analyze unsteady flows over two-dimensional airfoils and three-dimensional wings. Eigenanalysis and reduced-order modeling are performed using a conventional method with and without the static correction technique. In addition to the conventional method, eigenanalysis and reduced-order modeling are also performed using the new proposed method, that is, without static correction requirement. Numerical examples are presented to demonstrate the accuracy and computational efficiency of the proposed method. Based on the obtained results, it is shown that the accurate reduced-order models of unsteady flows can be constructed without using the static correction technique
  6. Keywords:
  7. Airfoils ; Computational methods ; Computer simulation ; Eigenvalues and eigenfunctions ; Wings ; Fluid eigenmodes ; Reduced-order modeling ; Static correction ; Vortex lattice method ; Unsteady flow
  8. Source: Journal of Aircraft ; Volume 42, Issue 4 , 2005 , Pages 882-886 ; 00218669 (ISSN)
  9. URL: https://arc.aiaa.org/doi/10.2514/1.7549