Search for dissertations about: "mixing scales"

Showing result 1 - 5 of 55 swedish dissertations containing the words mixing scales.

  1. 1. Fluxes and Mixing Processes in the Marine Atmospheric Boundary Layer

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Erik Olof Nilsson; Anna Rutgersson; Harm Jonker; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Waves; Growing sea; Swell; Marine boundary layer; Air-sea interaction; Mixing; Momentum flux; Wind stress; Flux attenuation; Sensor separation; Large eddy simulation; Multiresolution analysis; Coupling; Wave model; Climate model; Wave age; Meteorology; Meteorologi;

    Abstract : Atmospheric models are strongly dependent on the turbulent exchange of momentum, sensible heat and moisture (latent heat) at the surface. Oceans cover about 70% of the Earth’s surface and understanding the processes that control air-sea exchange is of great importance in order to predict weather and climate. READ MORE

  2. 2. Gas Mixing in a Circulating Fluidised Bed Boiler

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Johan Sternéus; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; circulating fluidized bed; gas mixing; tracer; boiler; dispersion; scaling; turbulence; two-phase flow; fluidization;

    Abstract : The present thesis is a study on the gas-mixing behaviour in a circulating fluidised bed (CFB) boiler. The aim is to describe how gas is spread in different regions of a CFB furnace and to explain variations in the mixing rate under different operating conditions. READ MORE

  3. 3. A Multi-Scale Approach To Adhesive Mixing

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Duy Nguyen; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Adhesive particle mixing; CFD simulation; multiscale; dry particle coating; regime map.; DEM simulation; dry powders for inhalation;

    Abstract : Adhesive particle mixing is a fundamental process in many applications, especially in dry powders for inhalation. Despite its importance, a mechanistic process description for designing the structure of interest is still lacking. READ MORE

  4. 4. Numerical studies of turbulent flames in wall-jet flows

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Zeinab Pouransari; Arne V. Johansson; Yves D'Angelo; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulence; combustion; direct numerical simulation; wall-jet; heat release effects; mixing scales; non-premixed flame; wall heat transfer; Teknisk mekanik; Engineering Mechanics;

    Abstract : The present thesis deals with the fundamental aspects of turbulent mixing and non-premixed combustion in the wall-jet flow, which has a close resemblance to many industrial applications. Direct numerical simulations (DNS) of turbulent wall-jets with isothermal and exothermic reactions are performed. READ MORE

  5. 5. Fundamental studies of non-premixed combustion in turbulent wall jets using direct numerical simulation

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Zeinab Pouransari; V. Arne Johansson; Christer Fureby; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulence; non-premixed combustion; global reaction; direct numerical simulation; wall-jet; heat release; mixing scales; heat transfer; TECHNOLOGY Engineering mechanics Other engineering mechanics; TEKNIKVETENSKAP Teknisk mekanik Övrig teknisk mekanik;

    Abstract : The present thesis deals with the fundamental aspects of turbulent mixingand non-premixed combustion in wall-jet flows. Direct numerical simulations(DNS) of compressible turbulent flows are performed in a wall-jet configura-tion, which has a close resemblance to many industrial combustion applica-tions. READ MORE