Search for dissertations about: "Aero engine"

Showing result 16 - 20 of 58 swedish dissertations containing the words Aero engine.

  2. 16. Geometry parameterisation and response surface-based shape optimisation of aero-engine compressors

    Author : Jörgen Burman; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Abstract : The main goal in jet engine design is to achieve light, compact and highly efficient systems while reducing the cost and design times. Traditionally, the design has been based on trial-and-error procedures, which count on the skills and experience of the designer to suggest design improvements. READ MORE

  4. 17. Combustion Engine Characterization and Development by Means of Laser Diagnostics

    Author : Mattias Richter; Förbränningsfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; framdrivningssystem; Laser technology; Laserteknik; plasma; fluiddynamik; Gaser; plasmas; Gases; fluid dynamics; Motorer; laser engine lif plif; Motors and propulsion systems; Fysicumarkivet A:2002:Richter;

    Abstract : Planar laser induced fluorescence (LIF) has been utilized for two-dimensional imaging in combustion environments. By using tracer LIF the fuel distribution prior to ignition has been monitored in a GDI-engine. READ MORE

  5. 18. Numerical Simulations of Noise Reduction Devices for Aero Engines

    Author : Haukur Hafsteinsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Acoustic liner; G3D; CAA; CFD; CD-nozzle; LES;

    Abstract : Increasing air traffic and denser population around airports have led to stricterregulations on aircraft noise. The engine is the main source of noise of jet aircraft.Decreasing jet engine noise can in some cases reduce sonic fatigue andthereby increase the engine lifetime. READ MORE

  6. 19. CFD of Duct Acoustics for Turbocharger Applications

    Author : Emma Alenius; Mats Åbom; Laszlo Fuchs; Federico Piscaglia; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aero acoustics; Large Eddy Simulation; IC-engines; 1D models; turbocharger; orifice plate; Acoustics; Akustik; Fluid mechanics; Strömningsmekanik;

    Abstract : The search for quieter internal combustion engines drives the quest for a better understanding of the acoustic properties of engine duct components. In this work the main focus is the turbocharger compressor and a discussion of turbocharger acoustics and earlier work within the area is presented, giving an insight into its sound generating mechanisms and the damping effect it has on pressure pulses, i. READ MORE

  7. 20. Flow Duct Acoustics : An LES Approach

    Author : Emma Alenius; Mats Åbom; Laszlo Fuchs; Oliver Paschereit; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aero-acoustics; duct-acoustics; sound generation; acoustic scattering; acoustic-flow interaction; LES; IC-engines; orifice plate; confined jet;

    Abstract : The search for quieter internal combustion engines drives the quest for a better understanding of the acoustic properties of engine duct components. Simulations are an important tool for enhanced understanding; they give insight into the flow-acoustic interaction in components where it is difficult to perform measurements. READ MORE