Search for dissertations about: "fluid"

Showing result 11 - 15 of 2582 swedish dissertations containing the word fluid.

  1. 11. Experimental Studies of Turbulent Mixing in Impinging Jets

    Author : Rong Ding; Lunds universitet.; Lund University.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LDV; Gases; fluid dynamics; plasmas; Gaser; fluiddynamik; plasma; PIV LIF; TR- LIF; TR- PIV; perturbed- and swirling- impinging jets; passive control; frequency spectrum; turbulent fluxes; impinging jets; turbulent mixing;

    Abstract : This thesis concerns the experimental study of mixing and flow characteristic in turbulent circular impinging jets without and with jet orifice manipulators (i.e. passive-fixed perturbations atthe nozzle exit), without and with swirl. READ MORE

  2. 12. Computational Aeroacoustics Based on Large Eddy Simulation and Acoustic Analogies

    University dissertation from KFS AB

    Author : Mihai Mihaescu; Lunds universitet.; Lund University.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computational Aeroacoustics; Turbulent Flows; Large Eddy Simulation; Acooustic Analogies; Acoustic Source Terms; Inhomogeneous Wave Equation; Acoustic Boundary Conditions; Mechanical engineering; hydraulics; plasma; Technological sciences; Teknik; fluiddynamik; plasmas; Gaser; fluid dynamics; Gases; LES; vacuum technology; vibration and acoustic engineering; hydraulik; vakuumteknik; vibrationer; akustik;

    Abstract : The thesis presents a numerical method developed by the author and its applications for computing the generated sound by an unsteady flow field and its propagation. The full equations of motion for compressible and unsteady flows describe both flow field and sound generation and propagation. READ MORE

  3. 13. Numerical Modeling of Flows Related to Gas Turbine Combustors

    University dissertation from Department of Heat and Power Engineering, Lund university

    Author : Robert-Zoltán Szász; Lunds universitet.; Lund University.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; plasma; fluid dynamics; plasmas; Gaser; fluiddynamik; Gases; vortex breakdown; swirl; CFD; gas turbine;

    Abstract : The thesis focuses on the numerical simulation of the flow field in gas turbine burners. Due to tougher and tougher requirements on low levels of emission of pollutants there is a need for new combustion technologies. In gas turbines one method to attain low pollutant levels is the use of lean premixed combustion. READ MORE

  4. 14. Computational studies of flow in Couette Rheometer and particle interaction in non-Newtonian fluids

    University dissertation from Lund University (Media-Tryck)

    Author : Naser Hamedi; Lunds universitet.; Lund University.; [2016]
    Keywords : Non-Newtonian fluids; Correction factor; Fluid properties; Couette Rheometer; Particle interaction; Sedimentation; Computational Fluid dynamics; Plug flow; Herschel Bulkley; Power-law fluid; Immeresed boundary method;

    Abstract : This work aims to study the flow of non-Newtonian fluids and has two main goals. First, the power-law and Herschel Bulkley fluids are studied in a Couette rheometer. Second, the static and dynamic interaction of dual particles in power-law fluid are investigated. READ MORE

  5. 15. ON THE WAKE STRUCTURES OF FLOW AROUND DEFORMING AND VIBRATING BODIES

    University dissertation from Lund University (Media-Tryck)

    Author : Alper Cesur; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Large Eddy Simulation; Fluid-Structure Interaction; Vortex-induced Vibrations;

    Abstract : Popular Abstract in Swedish Datorsimuleringar, konsten att modellera verkliga eller tänkta händelser med hjälp av en dator och ett lämpligt simuleringsprogram, har blivit ett dominerande verktyg inom tekniska och naturvetenskapliga områden, likväl inom akademiska och industriella tillämpningar. Trots att experimentella studier har ett vedertaget erkännande inom diverse forskningsstudier har den snabba utvecklingen av datorprestanda, mjukvara och algoritmer gjort att datorsimulering blivit ett vitalt och väletablerat komplement till kostsamma experiment. READ MORE