Sökning: "statistical bubble parameters"

Hittade 3 avhandlingar innehållade orden statistical bubble parameters.

  1. 1. A Numerical Study of the Fluid Dynamics of Bubbling Fluidized Beds

    Författare :Hans Enwald; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; validation; two-phase solver; multiblock; statistical bubble parameters; parallelization; bed expansion ratio; bubbling fluidized bed; two-fluid model;

    Sammanfattning : The two-fluid model was evaluated as a tool for predicting local flow behaviour in bubbling fluidized beds. A review is given of the two-fluid model approach for simulation of the flow in bubbling fluidized beds. LÄS MER

  3. 2. Hydraulic conductivity relations in soil and fractured rock : fluid component and phase interaction effects

    Författare :Jerker Jarsjö; KTH; []
    Nyckelord :;

    Sammanfattning : The hydraulic conductivity of soil and fractured rockdetermines the rate at which fluids and dissolved chemicals flowthrough the subsurface, for given conditions at the boundary.Hence, the estimation of relevant parameters for quantificationof hydraulic conductivity relations constitutes a critical basisfor accurate model predictions. LÄS MER

  4. 3. An Experimental Study on Micro-Hydrodynamics of Evaporating/Boiling Liquid Film

    Författare :Shengjie Gong; Ma Weimin; Horst-Michael Prasser; KTH; []
    Nyckelord :liquid film; critical thickness; boiling; critical heat flux; rupture; dry spot; confocal optical sensor; SRA - Energy; SRA - Energi;

    Sammanfattning : Study of liquid film dynamics is of significant importance to the understanding and control of various industrial processes that involve spray cooling (condensation), heating (boiling), coating, cleaning and lubrication. For instance, the critical heat flux (CHF) of boiling heat transfer is one of the key parameters ensuring the efficiency and safety of nuclear power plants under both operational and accident conditions, which occurs as the liquid layers (microlayer and macrolayer) near the heater wall lose their integrity. LÄS MER