Original scientific paper

https://doi.org/10.13044/j.sdewes.d14.0704

Seawater Intrusion in Estuary Rivers: a Proposed Hydrodynamic Solution

Qais Hatem Al-Madhlom ; University of Babylon, Hilla-Al Musayab, Iraq
Sanaa Abdulrazaq Jassim ; University of Babylon, Hilla-Al Musayab, Iraq
Faris Sahib Alrammahi ; Imam Al-Kadhim College, Baghdad, Iraq

Abstract

A considerable threat facing both estuary rivers and aquifers is seawater intrusion. Published articles emphasise modelling the intrusion, either mathematically or numerically, using software that lacks the capacity to introduce a hydrodynamic solution to mitigate the intrusion into fresh water. This paper presents a proposed solution for seawater intrusion using contractions. COMSOL software was used to simulate the intrusion into a hypothetical 10 km-long, 1 km-wide canal with an 80% contraction ratio. The simulation used three different conditions across four different contraction geometries, in addition to a default canal. The results show that the best geometries are the double semicircles and the wide contraction. For a 10 km canal length, the range of 10%-20% of the effective concentration will only intrude for just 0.75 km beyond the contraction.

Keywords

Seawater intrusion; Estuary rivers; COMSOL software; Contraction; Saltwater intrusion; Mass transfer.

Hrčak ID:

351018

URI

https://hrcak.srce.hr/351018

Publication date:

14.9.2026.

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