Essays about: "spillways"

Showing result 6 - 10 of 21 essays containing the word spillways.

  1. 6. CFD Simulations of Flow Characteristics of a Piano Key Weir Spillway

    University essay from Uppsala universitet/Elektricitetslära

    Author : William Sjösten; Victor Vadling; [2020]
    Keywords : Piano Key Weir; Ansys Fluent; Multiphase Flow; Spillway; Flow Characteristics; CFD; Realizable k-epsilon; Volume of Fluid; Renolds-averaged Navier-Stokes;

    Abstract : Comprehensive rehabilitation projects of dam spillways are made in Sweden, due to stricter dam safety guidelines for their discharge capacity. The Piano Key Weir (PKW) is an innovative design which has proven effective through several renovation projects made in many countries including France. READ MORE

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

    University essay from Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Author : Mikael Björnfot; [2020]
    Keywords : Energy; CFD; Hydropower plant; Energi; Vattenkraft;

    Abstract : 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. READ MORE

  4. 8. Handling river floating debris for dam safety – the state of the practice

    University essay from KTH/Betongbyggnad

    Author : Aymane Hassan; [2020]
    Keywords : floating debris; debris yield; debris transport; dam safety; floods; spillways; hydraulic models; debris management; hydraulic engineering;

    Abstract : This study reviews the current knowledge and state of the practice for handling floating debris for dam safety. This report is a guidance to improve the understanding of risks of floating debris for dam safety and of countermeasures for risk reduction. READ MORE

  5. 9. Prediction of early age and time dependent deformations in a massive concrete structure

    University essay from KTH/Betongbyggnad

    Author : Ali Aghili; Haris Ribac; [2018]
    Keywords : Early age concrete; hydration of cement; Storfinnforsen; ConTeSt; crack risk; temperature development; strain; mass concrete structures; measurement plan; Ung betong; hydratation av cement; Storfinnforsens kraftverk; ConTeSt; sprickrisk; temperatur; töjning; massiva konstruktioner; mätningsplanering;

    Abstract : The heat development that occurs due to the hydration of cement is important to consider during casting of massive concrete structures. By using computer programs that are based on finite element methods (FEM), simulations can be performed on the heat- and strength development. READ MORE

  6. 10. Experimental Investigation Of The Air-Water Flow Properties In The Cavity Zone Downstream A Chute Aerator

    University essay from

    Author : Ebba Wargsjö; Albin Hedehag Damberg; [2017]
    Keywords : Air bubble entrainment; chute aerators; aerators; air concentration; cavitation; cavitation damage; cavitation bubbles; bubble frequency; scale effects;

    Abstract : Chute aerators are widely used in spillways to avoid cavitation damage. When the water flow passes the aerator, two jets form – upper and lower jet. The purpose of this thesis has been to study the effects from the aerator by conducting experiments in a model with a flow depth large enough to ensure that the upper and lower jet remain separated. READ MORE