Search for dissertations about: "Laser-induced incandescence"

Showing result 1 - 5 of 18 swedish dissertations containing the words Laser-induced incandescence.

2. 1. Laser-Induced Incandescence for Soot Diagnostics: Theoretical Investigation and Experimental Development

   Author : Jonathan Johnsson; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; premixed flat flames; fractal soot aggregates; laser-induced incandescence; soot; soot optical properties; soot absorption function; laser diagnostics; Fysicumarkivet A:2012:Johnsson;

   Abstract : Laser-induced incandescence, LII, is a laser-diagnostic technique that can be used to measure the volume fraction and the sizes of soot particles suspended in a gas, such as within a combustion process or in its exhausts. The technique is based on the facts that the time-decay of the radiation from laser-heated soot particles is directly related to the particle size in the probed volume, and that the time-integrated radiation is related to the soot volume fraction. READ MORE

4. 2. On the Use of Laser-Induced Incandescence for Soot Diagnostics: From Theoretical Aspects to Applications in Engines

   Author : Henrik Bladh; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Laser-Induced Incandescence; Laser Diagnostics; LII; Soot; Model; Engine; Particulates; Soot volume fraction; Combustion; Physics; Fysik; quantum mechanics; classical mechanics; Mathematical and general theoretical physics; Matematisk och allmän teoretisk fysik; thermodynamics; statistical physics; gravitation; relativity; kvantmekanik; klassisk mekanik; termodynamik; statistisk fysik; relativitet; Gases; Gaser; fluid dynamics; plasmas; Teknik; Laserteknik; Motors and propulsion systems; Motorer; framdrivningssystem; fluiddynamik; plasma; Technological sciences; Laser technology;

   Abstract : The laser-induced incandescence technique (LII) is a laser-based diagnostic technique for measurements of soot volume fraction and particle size. The technique relies on detection of incandescent light from soot particles heated to around 4000 K using nanosecond laser pulses. READ MORE

5. 3. Combustion Studies of Soot and Fuel Based on Use of Laser Diagnostics

   Author : Boman Axelsson; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Laser Diagnostics; Laser Induced Fluorescence; Soot; Physics; Fysik; Laser technology; Motors and propulsion systems; Laserteknik; Laser-Induced Incandescence; Motorer; framdrivningssystem; Fysicumarkivet A:2002:Axelsson;

   Abstract : In the work described in the present thesis, laser techniques for combustion engine diagnostics were developed and applied. The main techniques were laser-induced incandescence (LII) and laser-induced fluorescence (LIF), used for both flame and engine diagnostics. READ MORE

6. 4. Development and Application of Single-Ended Picosecond Laser Diagnostics

   Author : Billy Kaldvee; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Raman Scattering; Temporal Filtering; Picosecond Laser Diagnostics; Rayleigh Scattering; Laser-spectroscopy; DIAL; Laser Combustion Diagnostics; Lidar; Laser-induced Fluorescence; Laser-induced Incandescence; Fysicumarkivet A:2012:Kaldvee;

   Abstract : Light detection and ranging (lidar), a method for nonintrusive, single-ended, and range resolved measurements, has been developed and applied for combustion related diagnostics. Employing picosecond laser pulse durations and detectors providing temporal resolution on the order of picoseconds, lidar has been applied successfully for both quantitative temperature- and species concentration measurements, obtaining an ultimate range resolution of 0. READ MORE

7. 5. Laser-Induced Incandescence and Complementary Diagnostics for Flame Soot Characterization

   Author : Nils-Erik Olofsson; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2015:Olofsson;

   Abstract : This work has been aimed at developing and applying laser-induced incandescence (LII) for flame soot characterization. The basic principle of LII is rapid heating of the soot particles to temperatures of 3500-4000 K by short laser pulses. Thereby the intensity of the soot incandescence is increased. READ MORE