Search for dissertations about: "turbulent mixing"

Showing result 1 - 5 of 97 swedish dissertations containing the words turbulent mixing.

  1. 1. Turbulent jets in confined spaces application in mixing ventilation: experimental and numerical studies

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Taghi Karimipanah; Högskolan i Gävle.; [1996]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; turbulent; wall jet; impinging jet; free jet; confinement effect; pressure; throw; experimental; numerical; corner; momentum; mixing ventilation;

    Abstract : The basis of mixing ventilation is the airflow supply to the room by means of jets initiatedfrom the ventilation diffusers. To avoid the draught problem, the design of mixing ventilationmakes uses the throw term, which is defined as the distance to the supply air terminal inwhich the jet centreline mean velocity is decreased to a given value. READ MORE

  2. 2. Experimental Studies of Turbulent Mixing in Impinging Jets

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Rong Ding; Lunds universitet.; Lund University.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LDV; Gases; fluid dynamics; plasmas; Gaser; fluiddynamik; plasma; PIV LIF; TR- LIF; TR- PIV; perturbed- and swirling- impinging jets; passive control; frequency spectrum; turbulent fluxes; impinging jets; turbulent mixing;

    Abstract : This thesis concerns the experimental study of mixing and flow characteristic in turbulent circular impinging jets without and with jet orifice manipulators (i.e. passive-fixed perturbations atthe nozzle exit), without and with swirl. READ MORE

  3. 3. Numerical Studies of Mixing in Pipes and Static Mixers

    University dissertation from Department of Food Technology, Engineering and Nutrition, Lund University

    Author : Mårten Regner; Lunds universitet.; Lund University.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulent mixing; Secondary flow; Viscosity ratio; Computational fluid dynamics; Food and drink technology; Livsmedelsteknik; Rate of striation thinning; Static mixer; Laminar mixing;

    Abstract : Popular Abstract in Swedish Syftet med denna avhandling var att studera blandningsprocessen i statiska mixrar vid laminärt flöde och i rör vid förträngning av vätskor med olika fysikaliska egenskaper. En numerisk metod och ett tillvägagångssätt för att karaktärisera statiska mixrar har utvecklats. READ MORE

  4. 4. On the modelling of turbulent flow and mixing in stirred reactors

    University dissertation from Inst. för Värme- och kraftteknik, Lunds tekniska högskola, Box 118 221 00 Lund

    Author : Johan Revstedt; Lunds universitet.; Lund University.; [1999]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; turbulence; CFD; stirred reactors; impeller modelling; Energy research; mixing; LES; Energiforskning;

    Abstract : This thesis concerns the numerical simulations and modelling of the flow structure and scalar transport in stirred reactors. For this Large Eddy Simulations (LES) have been used. The flow situation in a stirred reactor includes several flow phenomena that are not well predicted by "standard" two-equation models, e.g. READ MORE

  5. 5. Mathematical Modeling of Turbulent Reactive Flows

    University dissertation from Inst. för Värme- och kraftteknik, Lunds tekniska högskola, Box 118 221 00 Lund

    Author : Mikael Mortensen; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; PMF; CFD; probability density function; chemical reactions; presumed mapping function; PDF; conditional moment closure; turbulent mixing; computational fluid dynamics; CMC;

    Abstract : The purpose of this thesis has been to study and develop mathematical models of non-premixed turbulent reacting flows. The models developed can be used both by the chemical process industry and for turbulent combustion applications. Furthermore, the models are general and not developed for any specific chemical or mechanical system. READ MORE