Sökning: "inflow conditions"

Visar resultat 21 - 25 av 84 avhandlingar innehållade orden inflow conditions.

  1. 21. Numerical computations of wind turbine wakes and wake interaction

    Författare :Karl Nilsson; Dan Henningson; Stefan Ivanell; Thorsten Lutz; KTH; []
    Nyckelord :;

    Sammanfattning : When wind turbines are placed in farms, wake effects reduce the overall power production. Also, turbine loads are significantly increased since turbulence levels are high within the wake flow. LÄS MER

  3. 22. Large Eddy Simulation of Swirling Reacting Flows

    Författare :Mohammad Irannezhad; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Combustion; Swirling flow; Large Eddy Simulation;

    Sammanfattning : The combustion of fossil fuels remains a key technology as these fuels are the main source of energy in the foreseeable future. Heat released in combustion is often accompanied by emission of undesired soot, CO and NOx pollutants. LÄS MER

  4. 23. Aerodynamic Studies of Vertical Axis Wind Turbines using the Actuator Line Model

    Författare :Victor Mendoza; Anders Goude; Hans Bernhoff; Robert Flemming Mikkelsen; Uppsala universitet; []
    Nyckelord :wind power; vertical axis wind turbines VAWTs ; actuator line model ALM ; dynamic stall model DSM ; atmospheric boundary layer ABL ; wake deflection; atmospheric boundary layer ABL ; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : This thesis addresses the unsteady aerodynamics involved in the operation of vertical axis wind turbines (VAWTs). The main focus is to represent and understand the most relevant phenomena within the resulting flow pattern as the wake structure, loads on the different turbine components and the performance of the rotor. LÄS MER

  5. 24. Flow dynamics in corrugated pipes: Effect on particle agglomeration

    Författare :Ghulam Mustafa Majal; Mihai Mihaescu; Mats Åbom; Lisa Prahl Wittberg; Mikael Karlsson; José Galindo; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Mechanics; Teknisk mekanik;

    Sammanfattning : In recent times, the deleterious impact of particulate emissions from road vehicles on the well-being of humans has garnered a significant amount ofattention. Regulatory bodies have enacted legislation in order to counter act particulate emissions. LÄS MER

  7. 25. 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