Dynamic transport of river ice

Shen, Hung Tao; Shen, Hayley H.; Tsai, S. M.

doi:10.1080/00221689009499017

Cited by 46 publications

(2 citation statements)

References 5 publications

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“…The surface ice will produce flow resistance in addition to the bed shear stress (Shen et al 1990). The bed shear stress during the simulation periods was calculated and compared with those under open water conditions and the threshold Pagination not final (cite DOI) / Pagination provisoire (citer le DOI) value for the median sized bed material.…”

Section: Possible Impact Of 1984 Ice Jam On River Bedmentioning

confidence: 99%

Possible effects of the 1984 St. Clair River ice jam on bed changes

Kolerski

Shen

2015

Can. J. Civ. Eng.

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This study examines the possible effect of the record ice jam of 1984 in the St. Clair River on river bed changes and conveyance. Numerical simulations were made to examine the flow and bed shear stresses during the jam formation and release periods. Simulation results indicate that the ice jam in the river did not cause a significant increase in bed shear stress compared to pre-and post-jam open water conditions. The insignificant change on bed shear stress during the ice jam period is the result of the large flow depth and the limited jam thickness. The bed shear stresses are much less than the critical shear stress for bed particle movement. This implies that the jam may not have had a significant impact on the channel conveyance.Résumé : La présente étude examine les effets possibles des embâcles observés en 1984 sur la rivière Sainte-Claire sur les modifications du lit du cours d'eau et sur l'écoulement de ce dernier. Des simulations numériques ont été réalisées pour étudier le débit et les contraintes de cisaillement exercées sur le lit de la rivière lors les périodes de formation d'embâcles et pendant les débâcles de glaces. Ces simulations montrent que les embâcles de la rivière n'entraînaient pas d'augmentation significative des contraintes de cisaillement exercées sur le lit du cours d'eau, si l'on compare ces dernières à celles enregistrées dans la rivière avant et après la formation des embâcles. Les très faibles variations de contrainte de cisaillement observées dans le lit durant la formation des embâcles s'expliquent par la profondeur importante de la rivière et par la faible épaisseur de la glace au niveau des embâcles. Les contraintes de cisaillement exercées sur le lit sont bien inférieures aux contraintes de cisaillement limites liées au mouvement des particules du lit. De ce fait, les embâcles pourraient ne pas avoir d'impact significatif sur l'écoulement du cours d'eau. [Traduit par la Rédaction]Mots-clés : érosion de lit, embâcle, modélisation mathématique, dynamique de la glace de rivière, rivière Sainte-Claire.

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Section: Possible Impact Of 1984 Ice Jam On River Bedmentioning

confidence: 99%

Possible effects of the 1984 St. Clair River ice jam on bed changes

Kolerski

Shen

2015

Can. J. Civ. Eng.

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“…The internal ice strength between particles was derived diagnostically from ice density assuming ice was a nearly incompressible material. Later, Wang et al (1998) developed a sea-ice model of the Bohai Sea (east coast of China) using an SPH viscousplastic rheology (Hibler, 1979) with continuity equations for ice concentration and mean thickness, as well as ice strength calculated from static ice jam theory (Shen et al, 1990). Following Wang et al (1998), Ji et al (2005) implemented a new viscoelastic-plastic rheology that was in better agreement with observations from the Bohai Sea.…”

Section: Introductionmentioning

confidence: 99%

Smoothed particle hydrodynamics implementation of the standard viscous–plastic sea-ice model and validation in simple idealized experiments

Marquis,

Tremblay,

Lemieux

et al. 2024

The Cryosphere

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Abstract. The viscous–plastic (VP) rheology with an elliptical yield curve and normal flow rule is implemented in a Lagrangian modelling framework using the smoothed particle hydrodynamics (SPH) meshfree method. Results show, from a perturbation analysis of SPH sea-ice dynamic equations, that the classical SPH particle density formulation expressed as a function of sea-ice concentration and mean ice thickness leads to incorrect plastic wave speed. We propose a new formulation for particle density that gives a plastic wave speed in line with theory. In all cases, the plastic wave in the SPH framework is dispersive and depends on the smoothing length (i.e., the spatial resolution) and on the SPH kernel employed in contrast to its finite-difference method (FDM) implementation counterpart. The steady-state solution for the simple 1D ridging experiment is in agreement with the analytical solution within an error of 1 %. SPH is also able to simulate a stable upstream ice arch in an idealized domain representing the Nares Strait in a low-wind regime (5.3 m s−1) with an ellipse aspect ratio of 2, an average thickness of 1 m and free-slip boundary conditions in opposition to the FDM implementation that requires higher shear strength to simulate it. In higher-wind regimes (7.5 m s−1) no stable ice arches are simulated – unless the thickness is increased – and the ice arch formation showed no dependence on the size of particles, in contrast to what is observed in the discrete-element framework. Finally, the SPH framework is explicit, can take full advantage of parallel processing capabilities and shows potential for pan-Arctic climate simulations.

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Internal structure and sources of selected ice jams on the lower Vistula River

Pawłowski

2016

Hydrol. Process.

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The lower stretch of the Vistula is the most ice‐jammed river section on the North European Plain. Since 1982, the structure of hanging dams has been studied by means of a mechanical non‐core sampler. In this article, a selected of field research results of the hanging dams' structure and the degree of filling of the cross section with ice obtained during surface ice‐jam events in the years 1995–2014 are presented, along with an explanation of their causes. Surface ice jams occurred during spring snowmelt surges and ice breakups and also during freeze‐up and ice‐covered periods. Their main cause was changes in the river flow and was also those affected by anthropogenic sources. A characteristic feature of the analysed cross sections was the considerable share of the underhanging ice dam's firm accumulation with ice floes, when the cross section would be filled with ice in excess of 70%. In most cases, due to low river discharge, there was no substantial flooding damage. Copyright © 2016 John Wiley & Sons, Ltd.

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Dynamic transport of river ice

Cited by 46 publications

References 5 publications

Possible effects of the 1984 St. Clair River ice jam on bed changes

Possible effects of the 1984 St. Clair River ice jam on bed changes

Smoothed particle hydrodynamics implementation of the standard viscous–plastic sea-ice model and validation in simple idealized experiments

Internal structure and sources of selected ice jams on the lower Vistula River

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