Essays about: "multiphase flow"

Showing result 1 - 5 of 23 essays containing the words multiphase flow.

  1. 1. Modelling of the gas flow in fluidized beds

    University essay from Chalmers tekniska högskola/Institutionen för energi och miljö

    Author : Federica Gioia; [2017]
    Keywords : CCS; Emissions; Fluidized bed; Gas mixing; Multiphase flow;

    Abstract : Fluidized bed technology plays an important role in the transition of the current energy system to full sustainability, both as main first choice for thermochemical biomass conversion (which is considered CO2 neutral) and as basis for chemical looping combustion (CLC), which is considered to be the second generation of carbon capture applications, since it allows CO2 capture with no inherent energy penalty.The aim of the work is to formulate and implement a proper description of the gas flow inside a fluidized bed, covering a variety of scales and applications. READ MORE

  3. 2. A Cut Finite Element Method for Partial Differential Equations on Evolving Surfaces

    University essay from KTH/Numerisk analys, NA

    Author : Johan Wärnegård; [2016]
    Keywords : ;

    Abstract : This thesis deals with cut finite element methods (CutFEM) for solving partial differential equations (PDEs) on evolving interfaces. Such PDEs arise for example in the study of insoluble surfactants in multiphase flow. In CutFEM, the interface is embedded in a larger mesh which need not respect the geometry of the interface. READ MORE

  4. 3. Numerical investigation of bubbles in channel flow

    University essay from Chalmers tekniska högskola/Institutionen för sjöfart och marin teknik

    Author : Rémy Le Guen; [2016]
    Keywords : Multiphase simulation; OpenFOAM; drag reduction; Lagrangian Particle Tracking.;

    Abstract : This master’s thesis aims to study the numerical methods that can simulate the influence of injection of air bubbles under a ship’s hull. The geometry of the hull is simplified to a flat plate and the analysis is only done in two dimensions. READ MORE

  5. 4. Numerical Methods for Simulating Separation in a Vacuum Cleaner Cyclone

    University essay from KTH/Mekanik

    Author : Patrik Lans; [2016]
    Keywords : computational fluid dynamics CFD ; cyclone; separation efficiency;

    Abstract : This thesis includes a numerical comparison of different turbulence models and particle models in terms of convergence time and physical accuracy. A cyclone is used as the computational domain. Cyclones are common devices for separating two or more substances. The work is divided into an experimental part and a numerical part. READ MORE

  6. 5. Effect of Different Oil Droplet Sizes in a Flow of Natural Gas around a Compressor Blade. Numerical Simulations of Multiphase Flow using Computational Fluid Dynamics.

    University essay from Chalmers tekniska högskola/Institutionen för tillämpad mekanik

    Author : Kajsa Nohlås; Signý Tryggvadóttir; [2015]
    Keywords : CFD; CFX; Fluent; k − ! SST; Multiphase; gas-liquid flow; Lagrangian Particle Tracking; Coefficient of restitution; Wall film; one way coupling; spherical droplets;

    Abstract : Subsea is a term that refers to drilling and processing of gas and oil in underwaterlocations. One example of a subsea technology is a wet gas compressor which isused to compress fluids that consists of multiple phases. By compressing the wetgas the recovery of unprocessed streams can be increased and the investment costreduced. READ MORE