Sökning: "two-fluid model"

Visar resultat 11 - 15 av 25 avhandlingar innehållade orden two-fluid model.

  1. 11. Fluid Dynamics and Erosion in a Fluidized Bed for Energy Production. A Numerical and Experimental Study

    Författare :Klas Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; experimental validation; multiphase flow; energy; two-fluid model; environment;

    Sammanfattning : This thesis presents an experimental and a numerical investigation of fluid dynamics and erosion of heat transfer tubes in fluidized beds for energy conversion. The objective is to obtain recommendations for suitable models that can be used to predict the fluid dynamics and material wastage of heat exchanger tubes in fluidized beds. LÄS MER

  3. 12. Modelling and measurement of velocity and concentration in fibre-gas suspensions

    Författare :Olof Melander; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; particle transport; fibre suspensions; two-fluid model; particle image velocimetry; fibres; concentration measurement; computational fluid dynamics; multiphase flow;

    Sammanfattning : .... LÄS MER

  4. 13. Mathematical and Numerical Modeling of 1-D and 2-D Consolidation

    Författare :Katarina Gustavsson; KTH; []
    Nyckelord :twp-phase flow; consolidation; flocculated suspension; Eulerian two-fluid model; shear thinnih; numerical methods;

    Sammanfattning : A mathematical model for a consolidation process of a highlyconcentrated, flocculated suspension is developed.Thesuspension is treated as a mixture of a fluid and solidparticles by an Eulerian two-phase fluid model. LÄS MER

  5. 14. CFD MODELLING OF TWO-PHASE FLOWS AT SPILLWAY AERATORS

    Författare :Penghua Teng; James Yang; Anders Wörman; Staffan Lundström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; spillway; cavitation; aerator; air entrainment; air–water flow; VOF model; Two-Fluid model; Civil and Architectural Engineering; Byggvetenskap;

    Sammanfattning : Due to the high-speed flow in a chute spillway, cavitation damages often occur. This undesired phenomenon threatens the safety of the structure. For the purpose of eliminating the damages, an aerator is often installed in the spillway. To understand its characteristics, physical model tests are a popular method. LÄS MER

  7. 15. Time Spectral Methods - Towards Plasma Turbulence Modelling

    Författare :Kristoffer Lindvall; Jan Scheffel; Carl Sovinec; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Fusion; Turbulence; Micro-instabilities; Time-spectral; Navier-Stokes; MHD; Weiland model; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Energy comes in two forms; potential energy and kinetic energy. Energyis stored as potential energy and released in the form of kinetic energy. This process of storage and release is the basic strategy of all energy alternatives in use today. This applies to solar, wind, fossil fuels, and the list goes on. LÄS MER