Linear Stability of Three-dimensional Boundary Layers
Author | : M. R. Malik |
Publisher | : |
Total Pages | : |
Release | : 1993 |
Genre | : |
ISBN | : |
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Author | : M. R. Malik |
Publisher | : |
Total Pages | : |
Release | : 1993 |
Genre | : |
ISBN | : |
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 24 |
Release | : 2018-08-20 |
Genre | : |
ISBN | : 9781722341183 |
The viewgraphs and discussion of linear stability theory and three dimensional boundary layer transition are provided. The ability to predict, using analytical tools, the location of boundary layer transition over aircraft-type configurations is of great importance to designers interested in laminar flow control (LFC). The e(sup N) method has proven to be fairly effective in predicting, in a consistent manner, the location of the onset of transition for simple geometries in low disturbance environments. This method provides a correlation between the most amplified single normal mode and the experimental location of the onset of transition. Studies indicate that values of N between 8 and 10 correlate well with the onset of transition. For most previous calculations, the mean flows were restricted to two-dimensional or axisymmetric cases, or have employed simple three-dimensional mean flows (e.g., rotating disk, infinite swept wing, or tapered swept wing with straight isobars). Unfortunately, for flows over general wing configurations, and for nearly all flows over fuselage-type bodies at incidence, the analysis of fully three-dimensional flow fields is required. Results obtained for the linear stability of fully three-dimensional boundary layers formed over both wing and fuselage-type geometries, and for both high and low speed flows are discussed. When possible, transition estimates form the e(sup N) method are compared to experimentally determined locations. The stability calculations are made using a modified version of the linear stability code COSAL. Mean flows were computed using both Navier Stokes and boundary-layer codes. Spall, Robert E. and Malik, Mujeeb R. Unspecified Center ...
Author | : R. E. Spall |
Publisher | : |
Total Pages | : |
Release | : 1991 |
Genre | : |
ISBN | : |
Author | : Nabil M. El- Hady |
Publisher | : |
Total Pages | : 44 |
Release | : 1980 |
Genre | : |
ISBN | : |
Author | : Nabil M. El-Hady |
Publisher | : |
Total Pages | : 44 |
Release | : 1980 |
Genre | : Fluid mechanics |
ISBN | : |
Author | : Ronald D. Joslin |
Publisher | : |
Total Pages | : 56 |
Release | : 1992 |
Genre | : Boundary layer |
ISBN | : |
Author | : Eli Reshotko |
Publisher | : |
Total Pages | : 48 |
Release | : 1962 |
Genre | : Aerodynamics |
ISBN | : |
Author | : Erik Janke |
Publisher | : |
Total Pages | : 28 |
Release | : 1999 |
Genre | : |
ISBN | : |
Author | : Marcus Zengl |
Publisher | : |
Total Pages | : 0 |
Release | : 2023 |
Genre | : |
ISBN | : |
Author | : Institute for Computer Applications in Science and Engineering |
Publisher | : |
Total Pages | : 56 |
Release | : 1992 |
Genre | : |
ISBN | : |