Abstract
Numerical solutions are obtained for unsteady seepage through an embankment cross section that is typical of the many flood control embankments used in New Zealand. Free surface profiles following an instantaneous drop in river level are presented in dimensionless form and are checked with a Hele-Shaw experiment. A criterion is found for assessing the applicability of the instantaneous drawdown assumption in any given application. The solutions are compared with commonly used solutions of the linearized and nonlinear Dupuit equation, and it is found that both Dupuit approximations break down because of relatively large vertical velocity components along the free surface that occur immediately after the sudden drop in river level.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
