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Review of step-pool hydrodynamics in mountain streams
Sruthi Thazhathe Kalathil,
Published in SAGE Publications Ltd
2019
Volume: 43
   
Issue: 5
Pages: 607 - 626
Abstract
Step-pools are one of the major types of bed morphology prevalent in mountain streams. They have a unique flow structure as compared to low-gradient streams, in terms of large boundary elements and alternating super-critical and sub-critical flow conditions, which result in a non-uniform flow regime. Step-pools may also be constructed artificially to restore mountain incisions, and for creating close-to-nature fish passes. For hydraulic model development and various design considerations, the accurate prediction of flow phenomenon is required. This necessitates a detailed study of the turbulence phenomenon in natural step-pool reaches and its effect on the total flow. However, the influence of aerated conditions in step-pool hydrodynamics has not yet been adequately addressed. This paper presents a review of the mechanism of flow resistance and energy dissipation in step-pool mountain streams. Also, the significance of incorporating air entrainment in flow analysis, limitations and the way forward in modeling air–water flow in laboratory studies are discussed. © The Author(s) 2019.
About the journal
JournalData powered by TypesetProgress in Physical Geography
PublisherData powered by TypesetSAGE Publications Ltd
ISSN03091333
Open AccessNo
Concepts (7)
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    Fluid flow
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    Hydrodynamics
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    Hydrological modeling
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    Laboratory method
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    MOUNTAIN STREAM
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    POOL
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    Turbulence