Essays about: "Multiphase flow"

Showing result 1 - 5 of 27 essays containing the words Multiphase flow.

  1. 1. Numerical Study on Air Demand of Free Surface Flows in a Discharge Tunnel

    University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutionen för fysik och astronomi

    Author : Jonathan Barassa; Rickard Nordlöf; [2020]
    Keywords : Computational Fluid mechanics; Hydropower; Air demand; Free surface flows; ANSYS Fluent;

    Abstract : Aeration issued through a ventilation shaft is an important measure to prevent cavitation and large gauge pressure in flood discharge tunnels. In order to dimension the ventilation shaft appropriately, itis necessary to have a good understanding of the air-water flow in the tunnel. READ MORE

  2. 2. CFD Simulation of Particles in Pipe Flow and Mixing Tank

    University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

    Author : Aljaz Janic; [2020]
    Keywords : Multiphase flow; particles; TetraPak; mixing tank; pipe flow;

    Abstract : This project aimed to investigate the capability of the STAR CCM+ software when predicting the flow with particles using Lagrangian Particle Tracking and Discrete Element Method. The first part pertained to rectangular channel flow, with ratio between height of the channel and particle diameter (2h/Dp ) of 15. READ MORE

  3. 3. CFD Simulations of Flow Characteristics of a Piano Key Weir Spillway

    University essay from Uppsala universitet/Elektricitetslära; 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

  4. 4. Aeration and risk mitigation for flood discharge tunnel in Zipingpu water conservancy project

    University essay from KTH/Betongbyggnad; KTH/Betongbyggnad

    Author : Jorge CONTRERAS MORENO; KIBRET DAWIT GHEBREIGZIABHER; [2020]
    Keywords : Flood discharge tunnel; cavitation risk; cavitation index; aerators; CFD model;

    Abstract : The importance of hydraulic structures has become an essential mitigating mean for floodsthat occur more often due to climate change. Thus, the importance and safety of flooddischarge tunnels has promoted further studies and experiments on the topic to mitigatedamages, such as cavitation that arise because of high speed flows. READ MORE

  5. 5. Computational fluid dynamics calculations of a spillway’s energy dissipation

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Robin Lindstens; [2020]
    Keywords : Computational Fluid mechanics; Hydropower; Spillway; Energy dissipation; ANSYS Fluent;

    Abstract : To make sure that a dam is safe it is important to have good knowledge about the energy dissipation in the spillway. Physical hydraulic model tests are reliable when investigating how the water flow behaves on its way through the spillway. READ MORE