Sökning: "experimental work"

Visar resultat 21 - 25 av 2979 avhandlingar innehållade orden experimental work.

  1. 21. Car Users' Switching to Public Transport for the Work Commute

    Författare :Lars Eriksson; Margareta Friman; Tommy Gärling; Maria Johansson; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Car-use Reduction; Work Commute; Public Transport; Experimental Simulation; Satisfaction with Travel; Psychology; Psykologi; Psykologi; Psychology;

    Sammanfattning : The general aim of the present thesis was to investigate the determinants of car users’ switching to public transport when driving to work. Since the quality of services is particularly low in medium-sized cities, making the car a much more attractive option, the studies focus on car-use in such cities. Four studies were conducted. LÄS MER

  3. 22. Experimental Studies on the Aeroacoustics of Low-Speed Axial Fans

    Författare :Michail Vourakis; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low-speed axial fans; electric fans; experimental; laser Doppler anemometry; low-pressure axial fans; cooling fan; aeroacoustics; rotating ring;

    Sammanfattning : Low-speed axial fans are used in thermal management systems of internal combustion and electric vehicles. These systems are compact, cost-effective, all while addressing safety concerns. On the downside, fan operation leads to flow induced noise. LÄS MER

  4. 23. Experimental Aero Study on Turbine Rear Structures at Engine-Realistic Flow Conditions

    Författare :Valentin Vikhorev; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Clean Sky 2 Joint Undertaking European Union EU Horizon 2020 CS2-RIA EATEEM 82139; Turbine Rear Structure; Hot-wire anemometry; Outlet Guide Vanes; Experimental; Particle Image Velocimetry; Turbomachinery;

    Sammanfattning : The aviation industry has made great progress in continuous improvements that reduce the key pollutants associated with aero engines. However, high demands on the aviation industry drive manufacturers and designers to develop even more efficient aero engines. LÄS MER

  5. 24. Aerodynamic Design and Experimental Investigation of Short Nacelles for Future Turbofan Engines

    Författare :Vinícius Tavares Silva; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ultra-high-bypass turbofan; Computational Fluid Dynamics; powered nacelle.; Ultra-short nacelles; experimental; thrust-and-drag bookkeeping;

    Sammanfattning : To achieve a higher propulsive efficiency, and hence reduced fuel burn and emissions, the next generation turbofan engines are expected to have higher bypass ratios and lower fan pressure ratios. However, the larger the bypass ratio, the larger becomes the fan and thus the nacelle. The result is an undesired increase in weight and nacelle drag. LÄS MER

  7. 25. Determinants of Car Users’ Switching to Public Transport for the Work Commute

    Författare :Lars Eriksson; Margareta Friman; Tommy Gärling; Daniel Eek; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Car-use Reduction; Work Commute; Public Transport; Experimental Simulation; Psykologi; Psychology;

    Sammanfattning : .... LÄS MER