The Journal of Hydraulic Research (JHR) publishes research papers in theoretical, experimental and computational hydraulics and fluid mechanics, relating to rivers, lakes, estuaries, coasts, constructed waterways, and some internal flows such as pipe flows. To reflect current trends in water research, articles that explore outcomes of interdisciplinary hydro-environment studies with a strong fluid mechanical component are especially welcome. Although preference is given to fundamental issues, papers focusing on important unconventional or emerging applications of broad interest are also appreciated.

Overview

This issue contains ten research papers, four technical papers and one discussion. They address fundamental and practical problems in free surface flows, gravity currents, interfacial turbulence, flow discontinuities, bed morphology, sedimentation and erosion, surface-subsurface interaction, column separation, and trash racks.

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Research papers

• Main channel width effects on overtopping-induced non-cohesive fluvial dike breaching
  Vincent Schmitz, Ismail Rifai, Lydia Kheloui, Sebastien Erpicum, Pierre Archambeau, Damien Violeau, Michel Pirotton, Kamal El Kadi Abderrezzak and Benjamin Dewals
  Pages: 601-610 | DOI: 10.1080/00221686.2023.2246923

• Hydrodynamics and turbulence of free-surface flow over a backward-facing step
  Qianyu Luo, Thorsten Stoesser, Razieh Jalalabadi and Zhihua Xie
  Pages: 611-630 | DOI: 10.1080/00221686.2023.2239751

• Simulation of laminar to transitional wakes past cylinders with a discontinuous Galerkin inviscid shallow water model
  Xitong Sun, Georges Kesserwani, Mohammad Kazem Sharifian and Virginia Stovin
  Pages: 631-650 | DOI: 10.1080/00221686.2023.2239750

• Assessment of interfacial turbulence treatment models for free surface flows
  Pengxu Zou, Taeksang Kim, Jeremy D. Bricker and Wim S.J. Uijttewaal
  Pages: 651-667 | DOI: 10.1080/00221686.2023.2246925

• Linear and nonlinear frequency-domain modelling of oscillatory flow over submerged canopies
  Otto E. Neshamar, Niels G. Jacobsen, Dominic A. van der A and Tom O'Donoghue
  Pages: 668-685 | DOI: 10.1080/00221686.2023.2231433

• Application of CFD to predict the sluice gate jammed
  Chuanming Sheng, Fang Liu, Chao Ma, Jijian Lian and Bin Ma
  Pages: 686-702 | DOI: 10.1080/00221686.2023.2239746

• On the dynamics of gravity current motion in a stratified ambient
  Angelos Kokkinos and Panagiotis Prinos
  Pages: 703-719 | DOI: 10.1080/00221686.2023.2239749

• Air entrainment and free-surface fluctuations in A-type hydraulic jumps with an abrupt drop
  Maoyi Luo, Hang Wang, Xiaohui Zheng, Davide Wüthrich, Ruidi Bai and Shanjun Liu
  Pages: 720-734 | DOI: 10.1080/00221686.2023.2239193

• Bed morphology adjustment under the impact of a near-bank emergent model vegetation patch
  Xu-Feng Yan, Huan-Feng Duan, Wing-Hong Onyx Wai and Xie-Kang Wang
  Pages: 735-753 | DOI: 10.1080/00221686.2023.2241844

• Finite-volume coupled surface-subsurface flow modelling in earth dikes
  Nathan Delpierre, Hadrien Rattez and Sandra Soares-Frazao
  Pages: 754-763 | DOI: 10.1080/00221686.2023.2246936

Technical notes

• Investigating the performance of the modified two-component pressure approach in capturing column separation with large vapour cavities
  David Khani, Yeo Howe Lim and Ahmad Malekpour
  Pages: 764-774 | DOI: 10.1080/00221686.2023.2231397

• Experimental investigation on flow of trash rack blockage in front of pumping station
  Tianxu Yan, Baoyun Qiu, Jianping Yuan and Guipeng Qi
  Pages: 775-787 | DOI: 10.1080/00221686.2023.2232755

• On application of empirical mode decomposition for turbulence analysis in open-channel flows
  Andrea Zampiron, Stuart M. Cameron and Vladimir Nikora
  Pages: 788-795 | DOI: 10.1080/00221686.2023.2241838

• Effects of relative curvature radius on erosion and sedimentation patterns in a 90o bend with and without bendway weirs
  Mohsen Salehzadeh, Mohammad Hemmati, Mehdi Yasi and Stefano Lanzoni
  Pages: 796-802 | DOI: 10.1080/00221686.2023.2242813

Discussion

• Numerical investigation of air demand by the free surface tunnel flows By WANGRU WEI, JUN DENG and WEILIN XU, J. Hydraulic Res. 59(1), 2021, 158--165, https://doi.org/10.1080/00221686.2020.1744747
  Matthias Bürgler, Benjamin Hohermuth, David F. Vetsch and Robert M. Boes
  Pages: 803-807 | DOI: 10.1080/00221686.2023.2257629

Closure

• Closure to “Numerical investigation of air demand by the free surface tunnel flows” by WANGRU WEI, JUN DENG and WEILIN XU, J. Hydraulic Res. 59(1), 2021, 158–165, https://doi.org/10.1080/00221686.2020.1744747
  Wangru Wei, Jun Deng and Weilin Xu
  Pages: 807-808 | DOI: 10.1080/00221686.2023.2262301