Abstract
A pH sensitive dye technique has been used to highlight the zones of greatest scalar concentration in a turbulent jet as color regions. Photographs taken with a motion picture camera showed circular zones of the width of the jet moving downstream. These expand downstream and lose color until they are only small patches and wisps of red. A scheme has been developed whereby the Lagrangian velocity of the most concentrated zones can be measured. These move regularly at constant or steadily decreasing speed along rays originating in the source. The speed is about twice that of the mean Eulerian velocity component.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 6 September 1996/Accepted: 7 January 1997
Rights and permissions
About this article
Cite this article
Corriveau, A., Baines, W. Measurements of the velocity of high-concentration zones in a turbulent jet. Experiments in Fluids 23, 193–201 (1997). https://doi.org/10.1007/s003480050102
Issue Date:
DOI: https://doi.org/10.1007/s003480050102