Sökning: "hydrodynamics"

Visar resultat 1 - 5 av 45 avhandlingar innehållade ordet hydrodynamics.

  1. 1. Heat Transfer and Hydrodynamics in Fallling Film Evaporation of Black Liquor

    Detta är en avhandling från Chalmers University of Technology

    Författare :Miriam Johansson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2008]
    Nyckelord :TEKNIKVETENSKAP; TECHNOLOGY; TEKNIKVETENSKAP; TECHNOLOGY; TEKNIKVETENSKAP; TECHNOLOGY; TEKNIKVETENSKAP; TECHNOLOGY; TEKNIKVETENSKAP; TECHNOLOGY; Heat transfer; black liquor; evaporation; evaporator; falling film; experimental; correlation; hydrodynamics; turbulence; kraft pulp mill;

    Sammanfattning : The evaporation plant is one of the major steam consumers in kraft pulp mills, which are the dominant type of chemical pulp mill in Sweden. Previous studies have shown potential to decrease the live steam demand for the pulp process, e.g. LÄS MER

  3. 2. Fluid and suspension hydrodynamics in the impeller discharge flow of stirred tanks

    Detta är en avhandling från Stockholm : Kemiteknik

    Författare :Ziyun Yu; KTH.; [2004]
    Nyckelord :hydrodynamics; stirred tank; phase Doppler anemometer;

    Sammanfattning : The hydrodynamics of an agitated tank have been studied byphase-Doppler anemometry. The focus is on the impeller anddischarge region of a 45o pitched blade turbine (PBT). Thestudy includes agitation of pure water as well as of a dilutesuspension of process particles. LÄS MER

  4. 3. Hydrodynamics, Erosion and Heat Transfer in Pressurized Fluidized Beds

    Detta är en avhandling från Chalmers University of Technology

    Författare :Jan Wiman; Chalmers tekniska högskola.; Chalmers University of Technology.; [1997]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIKVETENSKAP; TECHNOLOGY; fluidized bed; pressurized fluidized bed; tubes; bubble; gas flow; hydrodynamics erosion; heat transfer;

    Sammanfattning : Measurements of hydrodynamics, local tube erosion and local instantaneous bed-to-tube heat transfer were carried out in a cold, pressurized, fluidized bed with different horizontal tube banks. The influence of pressure, fluidization velocity, particle size and tube-bank geometry was studied. LÄS MER

  5. 4. Fluid dynamics and mass transfer in bubble columns with and without packing

    Detta är en avhandling från Chalmers University of Technology

    Författare :Peter Therning; Chalmers tekniska högskola.; Chalmers University of Technology.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bubble column; packed bubble column; multiphase reactor; laser doppler anemometry LDA ; hydrodynamics; fluid dynamics; mass transfer; dispersion;

    Sammanfattning : Bubble columns are used in the chemical industry to perform gas – liquid reactions, like oxidation, hydrogenation and fermentation. The objective of the present thesis was mainly to study the fluid dynamics of semi batch packed bubble columns at both atmospheric and pressurized conditions. LÄS MER

  7. 5. Large eddy simulation of cavitating and non-cavitating flow

    Detta är en avhandling från Chalmers University of Technology

    Författare :Tobias Huuva; Chalmers tekniska högskola.; Chalmers University of Technology.; [2008]
    Nyckelord :TEKNIKVETENSKAP; TECHNOLOGY; Cavitation; turbulence; modelling; hydrodynamics; numerical simulation; LES; RANS; DES; high Reynolds number;

    Sammanfattning : Most marine configurations are subject to a number of complex and important hydrodynamic phenomena affecting the overall performance of the vessel, both regarding resistance and propulsive efficiency. In this thesis, the possibility of numerically simulating some of these phenomena is investigated. LÄS MER