Bradley, SG, Mursch-Radlgruber, E and von Hünerbein, S 
ORCID: https://orcid.org/0000-0003-1796-7173
2006,
SODAR measurements of wind vortex strength and position
, in: International Symposium for the Advancement of Boundary Layer Remote Sensing, July 2006, Garmisch-Partenkirchen, Germany.
Abstract
A method is described for real-time visualisation of aircraft wing-tip vortices based on measurement data from a line array of SODARs. Every 2 s a ‘snapshot’ is taken of the atmospheric vertical velocity field above the SODARs. This provides a grid of velocity estimates at 25 m horizontal spacing and 10 m vertical spacing. These data are then fit, using non-linear least-squares, with a simple vortex model. The best fit for each velocity field image gives estimates of vortex pair strength and position, together with estimates of the accuracy of these parameters. Field results from an array of four SODARs are described, giving vortex trajectories and strength as a function of real time without dependence on assumptions regarding interactions with the atmosphere. It is found that estimates of position and spacing can be obtained to around ±4 m and of vortex circulation to ±50 m2 s-1. Recommendations are given for optimising SODARs for vortex measurements using practical technology.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Themes: | Subjects / Themes > Q Science > QC Physics > QC221-246 Acoustics - Sound Subjects / Themes > Q Science > QC Physics > QC851-999 Meteorology - Climatology Subjects outside of the University Themes |
| Schools: | Schools > School of Computing, Science and Engineering Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre |
| Refereed: | Yes |
| Depositing User: | Dr Sabine von Hünerbein |
| Date Deposited: | 19 Aug 2010 10:49 |
| Last Modified: | 18 Feb 2019 13:01 |
| URI: | http://usir.salford.ac.uk/id/eprint/9594 |
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