Numerical Simulation of River Ice Control with Booms
In this study a two-dimensional numerical model for simulating ice transport and accumulation in the vicinity of river ice booms is developed. The model considers the dynamics of surface ice transport in the river, coupled with the hydrodynamics of the flow. The water flow inside the moving surface...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
2000
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| Subjects: | |
| Online Access: | http://www.dtic.mil/docs/citations/ADA383060 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA383060 |
| Summary: | In this study a two-dimensional numerical model for simulating ice transport and accumulation in the vicinity of river ice booms is developed. The model considers the dynamics of surface ice transport in the river, coupled with the hydrodynamics of the flow. The water flow inside the moving surface ice and the ice accumulation is included in the hydrodynamics. The Lagrangian discrete-parcel method with smoothed particle hydrodynamics is used to simulate the ice dynamics and a finite-element method is used to solve the hydrodynamic equations. Ice entrainment at the boom or the leading edge and underside of the ice accumulation, as well as the limiting boom load for ice retention, are considered. The model is verified with analytical solutions for idealized ice jams in a rectangular channel, and calibrated to an ice jam that progressed up the lower Missouri River during January 1977. The model is then used to assess the feasibility of ice booms on the lower Missouri River. The results show that conventional ice booms may not be effective for typical flow conditions in the lower Missouri River, unless the water level at the Missouri-Mississippi River confluence is high and the water discharge is low. |
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