Assessing the Effectiveness of the IJmuiden Salt Screen Design for Nonuniform Selective Withdrawal by Physical and Numerical Modeling
Publication: Journal of Hydraulic Engineering
Volume 148, Issue 2
Abstract
Salt water intrusion through the New Sea Lock of IJmuiden, Netherlands requires mitigation to ensure availability of enough fresh water further inland. For this purpose, a salt screen has been proposed for selective withdrawal of salt water from the Noordzeekanaal in the vicinity of the lock complex. Formulas to assess the withdrawal rate of selective withdrawal are based on idealized layouts and conditions. In the case of IJmuiden, the flow surrounding a salt screen has a strong nonuniform character, such that these formulas are not applicable to predict the correct withdrawal rate and the effectiveness of selective withdrawal accurately. In this case physical scale modeling or computational fluid dynamics (CFD) modeling can be applied. This article discusses the limitations of the formulas for a three-dimensional (3D) flow application near the locks of IJmuiden and presents the use of CFD and physical scale model research to assess the flow patterns around the salt screen and the effectiveness of selective withdrawal. The CFD model was validated against the physical scale model and represented the complex flow fields around the salt screen to within acceptable deviations for both steady and transient states. This gives confidence in applying these more advanced modeling tools for the design and positioning of salt screens in confined complex 3D flow areas.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available in a repository online in accordance with funder data retention policies. The measurement data set can be obtained through the Deltares Data Portal (https://deltaresdata.openearth.eu/).
Acknowledgments
Rijkswaterstaat is acknowledged for their permission to publish this study and to make the measurement data and simulation results available. The authors are grateful to Wim Uijttewaal and Robert Jan Labeur of the TU Delft for the stimulating discussions during the execution of both the physical and numerical model tests.
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Published In
Journal of Hydraulic Engineering
Volume 148 • Issue 2 • February 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Oct 30, 2020
Accepted: Sep 13, 2021
Published online: Dec 15, 2021
Published in print: Feb 1, 2022
Discussion open until: May 15, 2022
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