Sökning: "Jet"

Visar resultat 16 - 20 av 529 avhandlingar innehållade ordet Jet.

  1. 16. Abrasive water jet cutting : an experimental and theoretical investigation

    Författare :Lars Ohlsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Manufacturing Systems Engineering; Produktionsutveckling;

    Sammanfattning : .... LÄS MER

  3. 17. Jet engine manufacturing engineering : machining of metal matrix composites (MMCs)

    Författare :Tero Skogberg; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 18. Modelling of Jet impingement Heat Transfer for Cooling of Cylindrical Foods

    Författare :Eva Olsson; Livsmedelsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multiple jets; Nusselt number; cooling; sinle jet; Jet impingement heat transfer; CFD; cylinder; SST; food;

    Sammanfattning : Cooling is an energy consuming operation in the food industry. Rapid cooling reduces the risk of growth of micro-organisms, improves the quality of the food product and increase the production rate... LÄS MER

  5. 19. Sound generation in metal flue organ pipes: On the influence of asymmetric flue exit geometry and vibrations of the upper labium with particular emphasis on the early response

    Författare :Matthias Scholz; Chalmers tekniska högskola; []
    Nyckelord :jet contraction; wall vibrations; CFD; jet velocity profile; tap tone; asymmetry of flue exits; operational deflection shapes; Coanda effect; yielding upper labium; modal analysis; bottom clamped cylinder; vibration measurements; metal flue organ pipes; dipole; initial jet formation;

    Sammanfattning : Sound generation in flue organ pipes is caused by the non-linear interaction between an instable jet and a tube resonator. Our understanding of this very complex physical process is still incomplete, and there is not yet a model that can explain all details of the richness in pipe sound which can be achieved by a trained organ pipe voicer. LÄS MER

  7. 20. Study of Supersonic Jet Noise Reduction using LES

    Författare :Haukur Hafsteinsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; G3D; Supersonic Jet; PIV; CD-nozzle; CFD; Compressible flow; CAA; Noise Reduction; LES; Flow Control;

    Sammanfattning : Increases in air traffic and denser population around airports have led to stricterregulations on aircraft noise. High noise levels from high-speed aircraft can causehearing damage in pilots and the airfield personnel. The engine is the main sourceof noise of all jet aircraft and is therefore a key component for improvement. LÄS MER