Author(s): Adel Emadzadeh, Yee-Meng Chiew
Linked Author(s): Adel Emadzadeh
Keywords: Hydraulic jump, Bubble Image Velocimetry (BIV), Particle Image Velocimetry (PIV), optical fiber probe, void fraction
Abstract:
This laboratory study investigates the void fraction (or local air concentration), flow filed and bubble velocity in a simple hydraulic jump. The experimental data are obtained by using a dual-tip optical fiber probe in conjunction with the particle and bubble image velocimetry techniques. This paper aims to provide a full picture of the turbulent flow field in a simple hydraulic jump as no single instrument is capable of measurement in both aerated and non-aerated flow regions. Point and image-based measurements are used as complementary techniques to study the turbulent flow field in the hydraulic jump. The result from each measuring technique is compared in both aerated and non-aerated regions with discussions of the drawbacks and sources of error related to each measuring technique. (2601, 70, 333)
Year: 2017