Search for dissertations about: "Laser-based diagnostic techniques"

Showing result 1 - 5 of 16 swedish dissertations containing the words Laser-based diagnostic techniques.

2. 1. Laser-Based Techniques for Combustion Diagnostics

   Author : Nikola Georgiev; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; LIF; Laser-based diagnostic techniques; PS; DFWM; Fysik; Fysicumarkivet A:1997:Georgiev;

   Abstract : Two-photon-induced Degenerate Four-Wave Mixing, DFWM, was applied for the first time to the detection of CO, and NH3 molecules. Measurements were performed in a cell, and in atmospheric-pressure flames. In the cell measurements, the signal dependence on the pressure and on the laser beam intensity was studied. READ MORE

4. 2. Multi-Dimensional Quantitative Laser-based Diagnostics - Development and Practial Applications

   Author : Rikard Wellander; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Post injection; Structured illumination; Mie scattering; Dense sprays; Extinction coefficient; Signal attenuation; Laser extinction; Multiple scattering; Scattering measurements; Planar laser induced fluorescence; Time resolved; Imaging through turbulent media; Three-dimensional image acquisition; Diesel particulate filter regeneration; Wall impingent; Biodiesel; LII; Large-bore gas Engine; Pre-chamber ignition; Fysicumarkivet A:2014:Wellander;

   Abstract : Laser based optical diagnostic methods are routinely used in combustion research. Many of the more common approaches are based on illuminating a cross-section of the sample with a thin laser sheet. For example, by targeting an electronic transition in a molecule, its concentration within the plane illuminated by the laser sheet can be deduced. READ MORE

5. 3. Laser-based diagnostics for investigating soot formation in combustion processes

   Author : MANU Mannazhi; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soot formation; Laser diagnostics; Combustion; Laser-induced Incandescence; Fysicumarkivet A2022:Mannazhi;

   Abstract : In this work, laser-based diagnostic techniques were developed and applied to investigate soot formation in small-scale laboratory burners as well as in practical combustion devices. Quantitative 2D laser-induced incandescence (LII) measurements often use a cylindrical lens to shape the beam and illuminate the planar region of interest. READ MORE

6. 4. Optical Diagnostics of Reactive Flows : Application of 3D emission tomography and laser-based methods

   Author : David Sanned; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2023:Sanned;

   Abstract : Nowadays, numerous specialized systems, ranging from electronics to energy production processes can be found both in science and industry. However due to their specialized nature they often exhibit high sensitivity to intrusive measurements, which can potentially perturb the sought-after characteristics or quantity and consequently compromise overall accuracy. READ MORE

7. 5. Application of Laser-based Diagnostics to a Prototype Gas Turbine Burner at Selected Pressures

   Author : Ronald Whiddon; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; OH; Laser Diagnostics; Elevated Pressure; Syngas; DLE; NOx; Combustion; Gas Turbine; PIV; PLIF; Pilot; SGT-750; Fysicumarkivet A:2014:Whiddon;

   Abstract : The matured laser-diagnostic techniques of planar laser-induced fluorescence (PLIF) and particle image velocimetry (PIV) were applied to a prototype gas turbine burner operating on various fuels. The work was performed to provide verification of computational fluid dynamic (CFD) models of the combustion of atypical fuels in a gas turbine combustor. READ MORE