A Caltech Library Service

Inverse-Imaging Method for Detection of a Vortex in a Channel

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.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


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.

Item Type:Article
Related URLs:
URLURL TypeDescription
Colonius, Tim0000-0003-0326-3909
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.
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)F49620-00-C-0035
Issue or Number:9
Record Number:CaltechAUTHORS:20190718-165125193
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97247
Deposited By: Melissa Ray
Deposited On:19 Jul 2019 14:44
Last Modified:16 Nov 2021 17:30

Repository Staff Only: item control page