Search for dissertations about: "Eulerian two-fluid model"

Showing result 1 - 5 of 9 swedish dissertations containing the words Eulerian two-fluid model.

2. 1. A numerical study of two-fluid models for dispersed two-phase flow

   Author : Reynir Levi Gudmundsson; Björn Sjögreen; Anders Petersson; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Numerical analysis; two-phase flow; two-fluid mode; well-posedness; numerical experiments; Numerisk analys; Numerical analysis; Numerisk analys;

   Abstract : In this thesis the two-fluid (Eulerian/Eulerian) formulation for dispersed two-phase flow is considered. Closure laws are needed for this type of models. We investigate both empirically based relations, which we refer to as a nongranular model, and relations obtained from kinetic theory of dense gases, which we refer to as a granular model. READ MORE

4. 2. Fluidized Bed Operating Parameters and Eulerian Erosion Models

   Author : Mattias Gustavsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Eulerian erosion model; fluidized bed; distributor plate; slugging; plenum chamber; brittle; two-fluid model; ductile; air-feed system;

   Abstract : A numerical two-fluid code, Gemini 2D, was adapted to study gas-solid fluidization in arbitrary 2D domains. The code was also used to study fluid dynamic mechanisms of dense particle flow that cause ductile and brittle erosion of solids. READ MORE

5. 3. Simulation of consolidation processes by eulerian two-fluid models

   Author : Katarina Gustavsson; KTH; []
   Keywords : ;

   Abstract : The objective of this report is to study a model of agravity and shear induced consolidation process of a dense,flocculated suspension.The suspension is modeled as a two-constituent mixture of afluid and solid particles by an Eulerian two-phase fluid model. READ MORE

6. 4. Modelling and Simulation of Turbulent Gas-Solid Flows applied to Fluidization

   Author : Eric Peirano; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Eulerian models; fluidization; two-fluid model; two-phase flow; granular flow theory; turbulence; fluidized beds; gas-solid flows;

   Abstract : Modelling of gas-solid suspensions has been studied with emphasis on suitable closure laws. A study of characteristic time scales and energy dissipation mechanisms is made for the case of a simple shear flow. Applications of the modelling are presented in the form of simulation and validation of experiments in fluidized beds. READ MORE

7. 5. On Particle Transport and Turbulence Modification in Air-Particle Flows

   Author : Camilla Ljus; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; turbulent dispersion; hot film probe; turbulence measurements; turbulence modification; particle transport; two-fluid model;

   Abstract : The transport of particles by airflow was studied for two different flow cases, the transport of pulp fibres in a mat-forming process and the transport of pulp fibres and spherical particles in a horizontal pipe. The transport of pulp fibres in the mat-forming process is first considered. READ MORE