Sökning: "Eulerian-Eulerian"

Hittade 3 uppsatser innehållade ordet Eulerian-Eulerian.

  1. 1. Värmeöverföring mellan två zoner i en bubblande fluidiserad bädd

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Christian Stigsson; [2018]
    Nyckelord :Heat transfer; fluidized beds; multi-staging; Eulerian-Eulerian two-fluid; Technology and Engineering;

    Sammanfattning : In this Master's thesis, the heat transfer between two zones in a bubbling fluidized bed and the resultant temperature field were examined using a laminar Eulerian-Eulerian two-fluid model in computational fluid dynamics. The purpose was to estimate the thermal potential to multi-stage a combined heat and power boiler by integration therein of a communicating gasification reactor, which utilizes heat from the combustion, and to analyze how different construction parameters influence the homogeneity of the gas temperature field. LÄS MER

  3. 2. A CFD Method for Simulation of Gas-Liquid Flow in Cooling Systems : An Eulerian-Eulerian Approach

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Malin Lind; Karl Johan Josefsson; [2016]
    Nyckelord :CFD; Gas-Liquid; Two-phase; Eulerian; Air bubbles; Flow; Eulerian-Eulerian; Cooling system;

    Sammanfattning : When designing modern engines it is important to construct a cooling system that cools the engine structure efficiently. Within the cooling system there is always a certain amount of air which can accumulate and form air pockets in critical areas, such as the water jacket, which can lead to wall degradation. LÄS MER

  4. 3. Simulation of bubbly flow in a flat bubble column

    Master-uppsats, Lunds universitet/Kemiska institutionen; Lunds universitet/Kemiteknik (CI)

    Författare :Andreas Nygren; [2014]
    Nyckelord :Computational Fluid Dynamics; Bubble Column; Turbulence Modelling; Eulerian-Eulerian framework; Chemistry;

    Sammanfattning : Numerical, transient simulations of a meandering bubble plume in a rectangular flat bubble column was carried out, using the commercial CFD package ANSYS Fluent 15 within the framework of a Eulerian-Eulerian description. A Sensitivity analysis of turbulence closure was performed using four turbulence models: standard, RNG, Realizable k − epsilon and the Reynolds stress model. LÄS MER