Essays about: "hydropower structures"

Showing result 1 - 5 of 13 essays containing the words hydropower structures.

  1. 1. 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

  3. 2. 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

  4. 3. Rotor Dynamic Modeling of Hydropower Rotors by 3D-Finite Element Analysis

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

    Author : Simon Pääjärvi; [2022]
    Keywords : Rotordynamics; Applied Mechanics; Dynamics; Rotor; Finite Element Analysis; Hydropower; Solid Mechanics; Energy Production;

    Abstract : By using the rotor dynamic capabilities of Simcenter Nastran Rotordynamics, an eigenvalue analysis of 3D-finite element models of the Jeffcott rotor and the overhung rotor were conducted and compared to the results with beam-based, lumped parameter models. The first two critical speeds of the Jeffcott rotor were estimated with variations of 3. READ MORE

  5. 4. Architecture of Power

    University essay from KTH/Arkitektur

    Author : Fredrik Wadensten; [2021]
    Keywords : Architecture; Stockholm; City planning; Urban planning; Urban space; Energy production; Hydropower; Renewable energy; Public space; Housing; Nacka; Renewal;

    Abstract : The 34 silos at Jarlaberg today contain crude oil but after the lease of land expires at 2036 are refurbished and remade to hold 2 500 000 m3 of water from Stockholm archipelago. Sharing the industrial plot of the reworked silos are 13 buildings with 2000 households between them. READ MORE

  6. 5. Experimental Tests of Pre - placed Aggregate Concrete for Concrete Repairs

    University essay from KTH/Betongbyggnad

    Author : Husseen Hassan; Abdifatah Sahal; [2020]
    Keywords : Shrinkage; Compressive strength; Splitting tensile strength; Freeze-thaw; resistance; Pre-placed aggregate concrete; PREPAC; Slag; Krympning; Tryckhållfasthet; Spräckhållfasthet; Frostbeständighet; Injekteringsbetong; PREPAC; Slagg;

    Abstract : Since a large part of the hydropower structures in Sweden was built in the 1950s and 1960s, many of them are slowly but surely exhibiting deterioration. The hydropower companies are facing big challenges and are consequently investing in effective repairing methods since a hydropower structure failure could pose serious consequences and dangers to people, the environment, and the community. READ MORE