Search for dissertations about: "isotropic turbulence"

Showing result 1 - 5 of 20 swedish dissertations containing the words isotropic turbulence.

  1. 1. Mean Wind and Turbulence Conditions in the Boundary Layer above Forests

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Johan Arnqvist; Uppsala universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Wind power; Forest; Turbulence; Waves; Spectra; Wind model; Atmospheric stability; Vindkraft; Skog; Turbulens; Vågor; Spektra; Modell; Atmosfärisk stabilitet;

    Abstract : As wind turbines have grown, new installation areas become possible. Placing wind turbines in forested landscapes introduce uncertainties to the wind resource estimation. READ MORE

  2. 2. Suspensions of finite-size rigid particles in laminar and turbulent flows

    University dissertation from Kungliga Tekniska högskolan

    Author : Walter Fornari; KTH.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Suspensions; complex fluids; sedimentation; rheology; turbulence;

    Abstract : Dispersed multiphase flows occur in many biological, engineering and geophysical applications. Understanding the behavior of suspensions is a difficult task. In the present work, we numerically study the behavior of suspensions of finite-size rigid particles in different flows. READ MORE

  3. 3. Hydrodynamics considerations in cells systems from ocean flow to perfusion cultivation process

    University dissertation from Stockholm, Sweden : KTH Royal Institute of Technology

    Author : Caijuan Zhan; KTH.; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microorganism; cells; hydrodynamics; turbulence; numerical simulation; CFD; Resonance; Wave bioreactor; ATF; TFF; perfusion; design feeding strategy; Biotechnology; Bioteknologi;

    Abstract : Microorganisms and animal cells are grown surrounded by fluid, which is providing them with nutrients and removing their waste products. In nature and industry processes, cells/microbes can be subject to aggressive environments, such as turbulent flow or shear flow. READ MORE

  4. 4. Explicit algebraic subgrid-scale stress and passive scalar flux modeling in large eddy simulation

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Amin Rasam; KTH.; KTH.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulence; Large eddy simulation; explicit algebraic subgrid-scale model; passive scalar; stochastic modeling; backscatter; TECHNOLOGY Engineering mechanics Fluid mechanics; TEKNIKVETENSKAP Teknisk mekanik Strömningsmekanik;

    Abstract : The present thesis deals with a number of challenges in the field of large eddy simulation (LES). These include the performance of subgrid-scale (SGS) models at fairly high Reynolds numbers and coarse resolutions, passive scalar and stochastic modeling in LES. READ MORE

  5. 5. Turbulence Modelling and Parallel Solver Development Relevant for Investigation of Gas Turbine Cooling Processes

    University dissertation from Division of Heat Transfer, Lund Institute of Technology

    Author : Rongguang Jia; Lunds universitet.; Lund University.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal engineering; applied thermodynamics; Termisk teknik; termodynamik; large eddy simulation; Reynolds stress transport model; turbulence modelling; multi-block; parallel computing; Impingement cooling; ribbed surface;

    Abstract : To enhance the performance of gas turbine engines, high top-cycle temperatures are desired. However, the temperature is limited by current materials. READ MORE