Sökning: "Spillway channel"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Spillway channel.

  1. 1. COMPUTATIONAL FLUID DYNAMICS MODELING FOR BENT SPILLWAY CHANNEL : Numerical validation of a small scale physical model

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Mikael Björnfot; [2020]
    Nyckelord :Energy; CFD; Hydropower plant; Energi; Vattenkraft;

    Sammanfattning : Hydropower plants with spillways exposed to high pressures because of large discharges can result in a dam failure which ultimately results in devastating consequences. Therefore properly designed and constructed spillways are important. LÄS MER

  3. 2. Passage efficiency and migration behavior for adult Atlantic salmon at a Half-Ice Harbor fish ladder

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Robert Karlsson; [2013]
    Nyckelord :passage efficiency; salmon; fish ladder; telemetry; power station;

    Sammanfattning : Due to exploitation of the world’s rivers, the upstream migration of anadromous species is frequently delayed or even prevented. To mitigate these problems and allow fish to migrate past obstacles, structures such as fish ladders have been developed. However, recent studies show that many of the present fish passage facilities are deficient. LÄS MER

  4. 3. Flow conditions downstream of Bergeforsen dam

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Erik Lidén; [2012]
    Nyckelord :Bergeforsen; Indalsälven; spillway; dam safety; design flow; flow conditions; erosion; SMS; Surfacewater Modeling System; RMA2; Technology and Engineering;

    Sammanfattning : Due to the change in climate the design flow for Bergeforsen dam, located at the Indalsälven river mouth, is being revised from 2300 m3/s to more than 3000 m3/s. The dam needs to be upgraded with a new gated spillway and repaired in order to increase the safety of the dam. LÄS MER

  5. 4. Design of aerators for prevention of cavitation – The Höljes Dam.

    Master-uppsats, KTH/Vattendragsteknik

    Författare :Kristoffer Pettersson; [2012]
    Nyckelord :Cavitation; Spillway chute; Flow characteristics; Aeration; Aerator; Stagnation pressure;

    Sammanfattning : Major cavitation damages can seriously endanger the stability of hydraulic structures, in worst case lead to dam failure. To remedy the effect of cavitation on spillway chutes the most common method today is aeration of the flow. Aerators introduce air to the bottom layers of the flow, enough to prevent damages to occur in the concrete lining. LÄS MER

  7. 5. Numerical modeling of a slotted flip bucket spillway system – The Shibuya Hydropower Project. 

    Master-uppsats, KTH/Vattendragsteknik

    Författare :Johan Axelsson; Roger Knutsson; [2011]
    Nyckelord :Computational fluid dynamics; FLUENT; VOF; Open channel flow; Slotted flip bucket spillway; Discharge capacity;

    Sammanfattning : CFD is today a big part of the design process in hydraulic engineering and is more economical and time efficient than traditional scale models. But, there are still issues concerning the agreement with scale models in large and complex geometries. LÄS MER