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Publikācija: Equilibrium Time of Scour Near Water Engineering Structures on River Floodplains

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Nosaukums oriģinālvalodā Equilibrium Time of Scour Near Water Engineering Structures on River Floodplains
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.1. Būvniecības un transporta inženierzinātnes
Autori Oskars Lauva
Boriss Gjunsburgs
Atslēgas vārdi tinme,scour,structures,flow
Anotācija The differential equation of the bed sediment movement in clear-water scour conditions was used and a new method for equilibrium time of scour calculation at water engineering structures with flow separation at the structure in clear-water scour conditions was elaborated. The proposed threshold criteria for equilibrium time of scour known from the literature are only depending on the size of the hydraulic structure, and not on hydraulic parameters of the flow. Ratio of the recalculated critical flow velocity to the local one at the head of the water engineering structure was proposed as the hydraulic threshold criterion in equilibrium time of scour calculation. Calculated test data revealed that with an increase in flow contraction rate and with an increase in approach flow Froude number, equilibrium time of scour increases as well. To verify the developed equilibrium time of scour evaluation method, calculated time of scour values were compared to computer modelled ones, and the results showed good agreement. This calculation method can be applied to water engineering structures with flow separation at the structure at steady-flow and clear-water conditions.
DOI: 10.1007/978-3-319-70914-7_19
Hipersaite: https://link.springer.com/chapter/10.1007%2F978-3-319-70914-7_19 
Atsauce Lauva, O., Gjunsburgs, B. Equilibrium Time of Scour Near Water Engineering Structures on River Floodplains. No: Free Surface Flows and Transport Processes: Geo Planet: Earth and Planetary Sciences: 36th International School of Hydraulics, Polija, Jachranka, 23.-26. maijs, 2017. Cham: Springer Nature, 2018, 293.-306.lpp. ISBN 978-3-319-70913-0. e-ISBN 978-3-319-70914-7. Pieejams: doi:10.1007/978-3-319-70914-7_19
Papildinformācija Citējamību skaits:
  • Scopus  0
ID 27157