Essays about: "Manning coefficient"

Showing result 1 - 5 of 8 essays containing the words Manning coefficient.

  1. 1. Assessment of a sediment management solution in a reservoir with a sluicing technique using a HEC-RAS 2D model : Case study of Andakílsá river in west Iceland

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Emilía Sól Gudgeirsdóttir; [2023]
    Keywords : SediCon Sluicer; Andakílsá Hydropower Station; HEC-RAS 2D Sediment modelling; Sustainable sediment management; SediCon Sluicer; Andakílsá vattenkraftverk; HEC-RAS 2D Sediment Modellering; Hållbar sedimenthantering;

    Abstract : Sediment-related issues in reservoirs can often pose significant challenges to their operational effectiveness, sustainability, and environmental impact. Sustainable sediment management can help resolve these issues and extend the lifespan of dams. READ MORE

  3. 2. Shallow Water : A comparison between hydraulic measurements and numerical models

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Dan Nilsson; [2023]
    Keywords : CFD; Surface Roughness; Manning coefficient; Hydropower;

    Abstract : In the near future hydropower will be used to regulate intermittent energy sources, shallow water ways can then occur in close proximity to the power plants, where the bottom often consists of stones in a similar length scale as the water depth. The idea of this project, which has been initiated by Vattenfall R\&D, is to compare experimental measurements in a laboratory environment with numerical simulations with CFD, this to find a way to represent roughness structures where there is low relative submergence. READ MORE

  4. 3. Manning’s roughness coefficient in small scale nature-like fish passages

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Aleksander Jaworowski; [2022]
    Keywords : Manning’s coefficient; flow measurement; fish passage; fish migration; roughness coefficient; Technology and Engineering;

    Abstract : Fishway construction remains a crucial measure in environmental adaption of flow barriers. A well-functioning fishway should be able to pass all naturally occurring species of fish and other aquatic fauna. READ MORE

  5. 4. Study of the Dilution of a chemical spill through tracer experiments in The Käppala Association's Sewerage Network, Stockholm

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Jerome Scullin; [2021]
    Keywords : Sewerage network; Tracer tests; Solute transport; ADE; Breakthrough curve; Uranine;

    Abstract : Wastewater treatment plants (WWTPs) play a vital role in protecting the environment from much of the waste produced by humans. This includes not only human waste, but everything that makes its way into a sewerage system including greywater, stormwater, and potentially hazardous chemicals from, inter alia, chemical spills. READ MORE

  6. 5. Optimizing the design of two-stage ditches to improve nutrient and sediment retention

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Sofia Englund; [2020]
    Keywords : eutrophication; water quality; mitigation measure; two-stage ditch; retention time; water retention; nutrients; sediments; vegetation; terrace; HEC-RAS; Manning’s coefficient; water level; climate change; övergödning; vattenkvalitet; begränsande åtgärd; tvåstegsdike; retentionstid; vattenretention; näringsämnen; sediment; vegetation; terrass; HEC-RAS; Manning’s koefficient; vattennivå; klimatförändring;

    Abstract : Negative effects on water quality are created by eutrophication of the world’s water resources. Mitigation measures have been implemented, but poor improvements in water quality have been observed. Two-stage ditches have the possibility to increase nutrient and sediment retention to reduce eutrophication in receiving water bodies. READ MORE