Flow property and self-similarity in steady hydraulic jumps

Free surface detection in hydraulic jumps through image analysis and ultrasonic sensor measurements

“…Regarding to image analysis, some researchers have used PIV (Particle Image Velocimetry) and BIV (Bubble Image Velocimetry) techniques for determining the instantaneous velocity flow field (Misra et al, 2008;Bung, 2011;Rodríguez-Rodríguez et al, 2011;Lin et al, 2012). Studies on bottom aerators using combined techniques of PIV and Cesium 137 probe allowed obtaining very good void fraction profiles, used to quantify air entrainment along the water jet in such devices (Lima, 2004, Lima et al, 2008, 2009).…”

A multi-fluid modelling approach for the air entrainment and internal bubbly flow region in hydraulic jumps

“…In the present study, numerical predictions are validated against experimental measurements by Chachereau and Chanson (2010) and Lin et al (2012). For the measurements of Chachereau and Chanson (2010), experiments were carried out in a 3.2 m  0.5 m  0.45 m horizontal rectangular tunnel.…”

“…Recently, Lin et al (2012) measured the internal flow structure in a steady hydraulic jump using the image-based particle and bubble image velocimetry techniques and successfully obtained the ensemble averaged mean velocities and turbulence statistics from a series of repeated measurements. It is no denying that the above experimental works have provided valuable insight on the bubbly flow region and its influence on the internal flow structure.…”

Overtopping Flow Impact on a Vertical Wall on a Dike Crest

“…In this study, Bubble Image Velocimetry (BIV) technique developed by Ryu et al (2005) was applied to measure the flow velocity field in front of the wall. This technique has been proven sufficiently to measure this kind of flow (e.g., Ryu et al, 2007;Pedrozo-Acuña et al, 2011; Lin et al, 2012;Ariyarathne et al, 2012;Song et al, 2013). The BIV set-up of this study with top lighting provided by two Fresnel lights (500 W and 1000 W) were placed above the domain of interest, as shown in Figure 1b.…”