Sökning: "diffuser"

Visar resultat 1 - 5 av 36 avhandlingar innehållade ordet diffuser.

  1. 1. Valve-less diffuser micropumps

    Detta är en avhandling från Stockholm : Signaler, sensorer och system

    Författare :Anders Olsson; KTH.; [1998]
    Nyckelord :;

    Sammanfattning : Today there is growing interest in research on microfluidicsystems, e.g., for chemical analysis systems and microdosagesystems. One of the basic components in microfluidic systems ismicropumps. LÄS MER

  2. 2. Computational studies of passive vortex generators for flow control

    Detta är en avhandling från Stockholm : KTH

    Författare :Florian von Stillfried; KTH.; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; passive flow control; vortex generator; statistical modelling; turbulence; separation prevention; flat plate; diffuser; high-lift design; airfoil; TECHNOLOGY Engineering mechanics Fluid mechanics; TEKNIKVETENSKAP Teknisk mekanik Strömningsmekanik;

    Sammanfattning : Many flow cases in fluid dynamics face undesirable flow separation due torising static pressure on wall boundaries. This occurs e.g. due to geometry as ina highly curved turbine inlet duct or e. LÄS MER

  3. 3. A Large-Scale Facility for Investigation of Intermediate Turbine Ducts: Design, Implementation and Initial Tests

    Detta är en avhandling från Stockholm : KTH

    Författare :Lars-Uno Axelsson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; diffuser; S-shaped duct; wind-tunnel design; gas turbine; turbofan; annular duct; Intermediate turbine duct;

    Sammanfattning : Intermediate turbine ducts are used in modern multi-spool jet engines for guiding the flow from the high-pressure turbine to the low-pressure turbine. The demand for lighter, more efficient and more environmentally friendly aircraft engines requires the new jet engines to have higher by-pass ratios. LÄS MER

  4. 4. Designing Microfluidic Control Components

    Detta är en avhandling från Stockholm : Signaler, sensorer och system

    Författare :Wouter van der Wijngaart; KTH.; [2002]
    Nyckelord :actuation; beads; bubble; CFD computational fluid dynamics ; diffuser; DNA; electrostatic; energy conversion; FEA finite element analysis ; ;

    Sammanfattning : .... LÄS MER

  5. 5. Experimental study of the turbulent flow in a plane asymmetric diffuser

    Detta är en avhandling från Stockholm : Mekanik

    Författare :Olle Törnblom; KTH.; [2003]
    Nyckelord :fluid mechanics; wind-tunnel. Burbulence; turbulence modelling; earsm; asymmetric diffuser; boundary layer;

    Sammanfattning : The separating turbulent flow in a plane asymmetric diffuseris investigated experimentally. The considered flow case issuitable for fundamental studies of separation, separationcontrol and turbulence modelling. The flow case has beenstudied in a specially designed wind-tunnel under wellcontrolled conditions. LÄS MER