Special Issue "River Hydraulics under Ice-Covered Flow Conditions"

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydraulics and Hydrodynamics".

Deadline for manuscript submissions: 31 October 2021.

Special Issue Editor

Dr. Jueyi Sui
E-Mail Website
Guest Editor
Civil & Environmental Engineering Programs, School of Engineering, University of Northern British Columbia, Prince George, BC V2N 4Z9, Canada
Interests: local scour; sediment transport; river ice hydraulics; experimental study; numerical simulation; cold region hydrology
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

In winter, river ice forms when the water temperature declines to freezing. The formation of ice cover in rivers is an important phenomenon that affects fluvial hydraulics compared to that under open flow conditions. As a consequence, the winter operation of ice-covered rivers has to be changed. In the past 30 years, with the growing interest in fluvial hydraulics under ice-covered flow conditions, some progress has been made. Some cutting-edge research on all aspects of fluvial hydraulics under ice-covered flow conditions has been published. However, a more comprehensive understanding of the impact of ice cover on fluvial hydraulics is required. This Special Issue calls for renewed contributions that improve knowledge of this theme, including but not limited to the impacts of ice cover/jam on sediment transport and local scour/deformation of the riverbed. Research works regarding the effects of river ice on the operation of hydropower plants and channel navigation are welcome. Contributions regarding the impacts of ice cover on environmental and aquatic systems will be also included.

Dr. Jueyi Sui
Guest Editor

Manuscript Submission Information

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Keywords

  • flooding
  • fluvial hydraulics
  • ice cover
  • ice jam
  • local scour
  • riverbed deformation
  • river ice hydraulics
  • sediment transport

Published Papers (2 papers)

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Research

Open AccessArticle
Analytical Models of Velocity, Reynolds Stress and Turbulence Intensity in Ice-Covered Channels
Water 2021, 13(8), 1107; https://doi.org/10.3390/w13081107 - 17 Apr 2021
Viewed by 276
Abstract
Ice cover in an open channel can influence the flow structure, such as the flow velocity, Reynolds stress and turbulence intensity. This study analyzes the vertical distributions of velocity, Reynolds stress and turbulence intensity in fully and partially ice-covered channels by theoretical methods [...] Read more.
Ice cover in an open channel can influence the flow structure, such as the flow velocity, Reynolds stress and turbulence intensity. This study analyzes the vertical distributions of velocity, Reynolds stress and turbulence intensity in fully and partially ice-covered channels by theoretical methods and laboratory experiments. According to the experimental data, the vertical profile of longitudinal velocities follows an approximately symmetry form. Different from the open channel flow, the maximum value of longitudinal velocity occurs near the middle of the water depth, which is close to the channel bed with a smoother boundary roughness compared to the ice cover. The measured Reynolds stress has a linear distribution along the vertical axis, and the vertical distribution of measured turbulence intensity follows an exponential law. Theoretically, a two-power-law function is presented to obtain the analytical formula of the longitudinal velocity. In addition, the vertical profile of Reynolds stress is obtained by the simplified momentum equation and the vertical profile of turbulence intensity is investigated by an improved exponential model. The predicted data from the analytical models agree well with the experimental ones, thereby confirming that the analytical models are feasible to predict the vertical distribution of velocity, Reynolds stress and turbulence intensity in ice-covered channels. The proposed models can offer an important theoretical reference for future study about the sediment transport and contaminant dispersion in ice-covered channels. Full article
(This article belongs to the Special Issue River Hydraulics under Ice-Covered Flow Conditions)
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Open AccessArticle
Bridge Pier Scour under Ice Cover
Water 2021, 13(4), 536; https://doi.org/10.3390/w13040536 - 19 Feb 2021
Viewed by 423
Abstract
Bridge pier scour is a complex process, which is influenced by many parameters, including the presence of ice cover around piers. To better understand the influence of ice on bridge pier scour, an artificial ice cover, equipped with either a smooth or a [...] Read more.
Bridge pier scour is a complex process, which is influenced by many parameters, including the presence of ice cover around piers. To better understand the influence of ice on bridge pier scour, an artificial ice cover, equipped with either a smooth or a rough surface, was constructed and tested experimentally. The ice cover was positioned on the surface of the water and submerged to specified depths in order to replicate floating and fixed (pressurized) ice cover conditions, respectively. During each test, a velocity profile was collected beneath the ice cover, and after each test, a three-dimensional scan of the bed was collected to compare the resulting scour. It was discovered that the presence of an ice cover around a bridge pier increased pier scour under all conditions. Furthermore, as the ice cover was submerged deeper into the flow, the flow velocity increased, and greater scour resulted. For each level of submergence, the rough ice cover yielded increased scour depths compared to the smooth ice cover. Full article
(This article belongs to the Special Issue River Hydraulics under Ice-Covered Flow Conditions)
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