Sökning: "mean flow"

Visar resultat 1 - 5 av 403 avhandlingar innehållade orden mean flow.

  1. 1. Non-Spherical Particle Interaction in Duct and Jet Flow

    Detta är en avhandling från Luleå tekniska universitet

    Författare :Ammar Hazim; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solid-gas flow; turbulence modulation; duct flow; coaxial jets flow; swirl jet flow; active flow control; synthetics jet; biomass powder; non-spherical particles; PIV measurement; Engineering mechanics - Fluid mechanics; Teknisk mekanik - Strömningsmekanik; Strömningslära; Fluid Mechanics;

    Sammanfattning : Wood waste is the most popular biomass recourse for many nations. Burned wood can, direct or indirect, release one of the greenhouse gases, carbon dioxide. The process can still be seen as a renewable source of energy since replanting of the trees and crops are consuming nearly the same amount of carbon dioxide through photosynthesis. LÄS MER

  2. 2. Flow Duct Acoustics An LES Approach

    Detta är en avhandling från Luleå tekniska universitet

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

    Sammanfattning : 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. LÄS MER

  3. 3. Experimental Heat Transfer, pressure drop, and Flow Visualization of R-134a in Vertical Mini/Micro Tubes

    Detta är en avhandling från Stockholm : KTH

    Författare :Wahib Owhaib; Björn Palm; Tassos Karayiannis; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Minichannel; microchannel; heat transfer; pressure drop; single-phase; two-phase; flow boiling; flow visualization; dry out; bubble behavior; flow pattern.; TECHNOLOGY Engineering mechanics Mechanical and thermal engineering Mechanical energy engineering; TEKNIKVETENSKAP Teknisk mekanik Mekanisk och termisk energiteknik Mekanisk energiteknik;

    Sammanfattning : For the application of minichannel heat exchangers, it is necessary to have accurate design tools for predicting heat transfer and pressure drop. Until recently, this type of heat exchangers was not well studied, and in the scientific literature there were large discrepancies between results reported by different investigators. LÄS MER

  4. 4. Aortic valvular flow : a clinical and experimental doppler echocardiographic study

    Detta är en avhandling från Linköping : Linköpings universitet

    Författare :Birgitta Janerot Sjöberg; Ihlen Halfdan; [1993]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICINE; MEDICIN;

    Sammanfattning : Aortic blood velocity determination by ultrasound Doppler is a safe and valuable tool when evaluating patients with heart disease. The time-course of the velocity signal can be used for detemnining left ventricular function. LÄS MER

  5. 5. On one approximation scheme for generalised mean curvature flow

    Detta är en avhandling från Chalmers University of Technology

    Författare :Richards Grzhibovskis; Göteborgs universitet.; Gothenburg University.; [2002]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; convolution-tresholding scheme; viscosity solution; level-set equation; curvature flow; kinetic modeling; curvature flow; level-set equation; viscosity solution; kinetic modeling;

    Sammanfattning : .... LÄS MER