Search for dissertations about: "Nozzle Flows"

Showing result 21 - 25 of 31 swedish dissertations containing the words Nozzle Flows.

  2. 21. Heat Transfer and Fluid Flow Investigations in Ribbed Ducts and Impinging Jets Using Liquid Crystal Thermography and PIV

    Author : Xiufang Gao; Värmeöverföring; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal engineering; applied thermodynamics; Termisk teknik; termodynamik; Particle Image Velocimetry PIV .; Liquid Crystal Thermography LCT ; secondary flow; impinging jets; Enhanced heat transfer; ribbed ducts;

    Abstract : This thesis presents experimental investigations of local heat transfer and detailed flow measurements in ribbed rectangular ducts and impinging jets. The advanced measurement methods, Liquid Crystal Thermography (LCT) and Particle Image Velocimetry (PIV) are adopted to provide full field characteristics. READ MORE

  4. 22. Flow measurements related to gas exchange applications

    Author : Fredrik Laurantzon; Henrik Alfredsson; Venkatesa Vasanta Ram; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flow meters; vortex flow meters; compressible flow; pulsating flow; hot-wire anemometry; cold-wire anemometry; time resolved measurements; wavelet analysis;

    Abstract : This thesis deals with flow measuring techniques applied to steady and pulsating gas flows relevant to gas exchange systems for internal combustion engines. Gas flows in such environments are complex, i.e. they are inhomogeneous, three-dimensional, unsteady, non-isothermal and exhibit significant density changes. READ MORE

  5. 23. Numerical Modelling of Diesel Spray Injection and Turbulence Interaction

    Author : Fabian Kärrholm Peng; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computational Fluid Dynamics; Spray; Cavitation; Cavitation; Turbulence Model; AtomizationTurbulence Model; Diesel; Atomization;

    Abstract : It has been established by many authors that numerical simulations ofDiesel sprays, using a Lagrangian description for the liquid phase,are particularly sensitive to the scale of the computational cellscompromising the mesh. There have been many suggestions regardingmeans to reduce the dependency on the mesh by improving the componentsubmodels, but few have addressed the gas phase turbulence modelling. READ MORE

  6. 24. An Experimental Study of Fluid Dynamics and Mixing in Bubbly Gas-Liquid Flow Systems

    Author : Jafar Sadegh Moghaddas; Livsmedelsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bubbly flow; PLIF; Two-phase flow; PIV; Gases; plasmas; Gaser; fluid dynamics; fluiddynamik; plasma; Mixing;

    Abstract : In the present project, a new experimental method enabling Planar Laser-Induced Fluorescence (PLIF) measurements in bubbly gas-liquid flows is presented. Due to reflection and refraction of the laser light, the bubbles will cause an uneven and unknown distribution of light intensity in the measurement plane. READ MORE

  7. 25. Large Eddy Simulation of Turbulent Compressible Jets

    Author : Bernhard Semlitsch; Mihai Mihaescu; Laszlo Fuchs; Paul G. Tucker; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Compressible Flow; Large Eddy Simulation; Acoustic Noise Generation; Near-field Acoustics; Flow Control; Optimization; Modal Flow Decomposition; Engineering Mechanics; Teknisk mekanik;

    Abstract : Acoustic noise pollution is an environmental aggressor in everyday life. Aero- dynamically generated noise annoys and was linked with health issues. It may be caused by high-speed turbulent free flows (e.g. READ MORE