DONATE

IAHR Document Library


« Back to Library Homepage « Journal of Hydraulic Research 2006 Issue 5

Scour due to a horizontal turbulent jet: Numerical and experimental investigation

Author(s): Claudia Adduce; Giampiero Sciortino

Linked Author(s):

Keywords: Scour; velocity measurements; UDV; 2D horizontal jet; mathematical model

Abstract: In this paper both numerical and experimental investigations of local scour downstream of a sill followed by a rigid apron are presented. Nine laboratory experiments were carried out in clear water scour conditions, with different values of discharge. At the end of each run, velocity measurements both on the apron and on the scour hole were performed by ultrasonic Doppler velocimetry. A mathematical-numerical model was developed, simulating local scour downstream of a sill followed by an apron. The model uses information related both to the measured velocity fields and to the physical and mechanical properties of the sand constituting the mobile bed. The mathematical structure of the model consists of a second order partial differential parabolic equation whose unknown is the shape of the mobile bed. The numerical integration of this nonlinear equation, with suitable boundary conditions, is in agreement with the measured scour profiles at the end of the run. Upon comparing experimental and numerical data, a similar temporal evolution of the maximum scour depth is observed

DOI: https://doi.org/10.1080/00221686.2006.9521715

Year: 2006

Copyright © 2024 International Association for Hydro-Environment Engineering and Research. All rights reserved. | Terms and Conditions