Author(s): J. D. Nobrega; H. E. Schulz; D. Z. Zhu

Linked Author(s):

Keywords: Hydraulic jumps; Image processing; Free surface profile; Non-intrusive techniques

Abstract: The application of non-intrusive techniques has been sought in experimental studies involving complex hydraulic phenomena. In this sense, in the present study an ultrasonic sensor and a high speed camera were used for measurements in hydraulic jumps, in order to evaluate the free-surface characteristics. The free surface was identified in the images using relatively simple procedures of image processing. The proposed methodology for image analysis is relatively robust and produces the mean longitudinal interface profile compatible to that obtained with the ultrasonic sensor. The results of the present study include mean free surface profile, time evolution of the free surface and toe oscillation.

DOI: https://doi.org/10.14264/uql.2014.42

Year: 2014