Suzuki, Takao and Colonius, Tim (2003) Inverse-Imaging Method for Detection of a Vortex in a Channel. AIAA Journal, 41 (9). pp. 1743-1751. ISSN 0001-1452. doi:10.2514/2.7292. https://resolver.caltech.edu/CaltechAUTHORS:20190718-165125193
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Abstract
A simple vortex-imaging algorithm using a least-square method is considered. The position and the circulation of a vortex convected in a channel are identified from the time history of pressure at a limited number of points on the wall. The capabilities of the algorithm are demonstrated using two-dimensional direct numerical simulations. A few observer points on one side of the wall are sufficient to detect the position and the circulation of a compact vortex to a reasonable degree of accuracy. An advanced algorithm can even detect two nearby vortices to the same degree of accuracy. Because the algorithm assumes a point vortex solution, the accuracy of the detection deteriorates as the vorticity distribution spreads.
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| Additional Information: | © 2003 by Takao Suzuki and Tim Colonius. Published by the American Instituteof Aeronautics and Astronautics, Inc., with permission. Received 30 September 2002; revision received 3 March 2003; accepted for publication 25 April 2003. Published Online: 17 May 2012. This research was supported in part by the DARPA (Defense Advanced Research Projects Agency) program (Contract F49620-00-C-0035). We thank Richard Murray for an idea of the estimator-correctorand Kazuo Sone for generating several files. | |||||||||
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| Issue or Number: | 9 | |||||||||
| DOI: | 10.2514/2.7292 | |||||||||
| Record Number: | CaltechAUTHORS:20190718-165125193 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190718-165125193 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 97247 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Melissa Ray | |||||||||
| Deposited On: | 19 Jul 2019 14:44 | |||||||||
| Last Modified: | 16 Nov 2021 17:30 |
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