Paper Title
Parametric study of a laser ignited hydrogen–air mixture in a constant volume combustion chamber
Keywords
- Constant Volume Combustion Chamber
- CVCC
- Flame Kernel Development
- Flame Speed
- Hydrogen-Air Mixtures
- Fuel-Air Ratio
- Laser Ignition
- Q-Switched Nd:YAG Laser
- Laser-Induced Plasma
- Initial Chamber Pressure
- Initial Temperature
- Optical Setup
- Converging Lenses
- Focal Length
- Plasma Positioning
- High-Speed Imaging
- Piezoelectric Pressure Transducer
- Pressure-Time History
- Combustion Properties
- Alternative Ignition Techniques
- Hydrogen Combustion
- Clean Energy
- Renewable Fuels
- Advanced Combustion Research
- Optical Diagnostics
- Sustainable Energy
- Low-Emission Combustion
- High-Pressure Combustion
- Laser Energy Absorption
Research Impact Tools
Publication Info
Volume: 39 | Issue: 35 | Pages: 20207-20215
Published On
December, 2014
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Abstract
Experiments were carried out in a constant volume combustion chamber (CVCC) to investigate flame kernel development and flame speed of hydrogen–air mixtures having different fuel–air ratios. A Q-switched Nd: YAG laser with 1064 nm wavelength and pulse duration of 6–9 ns was used for ignition by generating laser induced plasma inside the CVCC. In this study, laser induced ignition of hydrogen–air mixtures was investigated using different initial chamber filling pressures (P = 2.5 bar–10 bar) at different initial temperatures (373 K–523 K). A variable optical setup with converging lenses having different focal lengths (f = 100–250 mm) were used to position the plasma at various locations inside the CVCC. A high speed camera recorded the flame kernel development and a piezoelectric pressure transducer recorded the pressure–time history for all the experiments. The main objective of this study was to determine the dependence of combustion properties of laser ignited hydrogen–air mixtures on lasers, optical configurations and initial conditions prevailing in the CVCC.
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