PLIF Thermometry Based on Measurements of Absolute Concentrations of the OH Radical
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Johannes Heinze
Abstract
A method for measurements of planar temperature distributions based on planar laser-induced fluorescence (PLIF) of the OH radiacal is described. The technique was developed specifically for the application in lean combustion systems, where OH equilibrium concentrations are largely independent on equivalence ratio and a function of temperature only. It is thus possible to derive a temperature information from measurements of absolute OH concentration, which can be obtained from a combined PLIF/absorption measurement.
This paper discusses the basics of the method, and describes validation experiments in high pressure laminar premixed flames which were performed to asses its applicability and accuracy. Therefore, we compared our LIF based results with CARS measurements performed in the same flames. Finally, an example for the application in a lean gas turbine model combustor is discussed.
© by Oldenbourg Wissenschaftsverlag, Köln, Germany
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Artikel in diesem Heft
- From flames to functional materials — The multiple facets of diagnostic techniques in Physical Chemistry
- High-Temperature Measurements of the Rate Constants for Reactions of OH with a Series of Large Normal Alkanes: n-Pentane, n-Heptane, and n-Nonane
- Experimental and Numerical Investigations of Ferrocene-Doped Propene Flames
- Non-Equilibrium Kinetic Studies of Plasma-Assisted Combustion using Laser-Based Diagnostics
- Coke Formation in Steam Reforming of Natural Gas over Rhodium/Alumina Catalysts: An Atomic Force Microscopy Study using the Oscillating Friction Mode
- Gas-Temperature Imaging in a Microwave-Plasma Nanoparticle-Synthesis Reactor Using Multi-Line NO-LIF Thermometry
- Identification of Tetrahydrofuran Reaction Pathways in Premixed Flames
- Competing Channels in the Propene + OH Reaction: Experiment and Validated Modeling over a Broad Temperature and Pressure Range
- The Effect of Carbon–Carbon Double Bonds on the Combustion Chemistry of Small Fatty Acid Esters
- PLIF Thermometry Based on Measurements of Absolute Concentrations of the OH Radical
- Diode Laser Induced Fluorescence for Gas-Phase Diagnostics
- Response of Bacillus thuringiensis Al Hakam Endospores to Gas Dynamic Heating in a Shock Tube
- Process Control of CVD Deposition of Nanocrystalline Diamond Films by Plasma Diagnostics
- Numerical Analysis of Thermoacoustic Instabilities Using LES and Computational Aeroacoustics
- On the Temperature Dependence of the Thermal Electron Attachment to SF6, SF5Cl, and POCl3
- Single Acetone Droplets at Supercritical Pressure: Droplet Generation and Characterization of PLIFP
- Low Energy Electron Point Source Microscopy of Two-Dimensional Carbon Nanostructures
- High Resolution IR Spectroscopy of the C–H Stretch Bands of Benzene Monomer and Dimer in Helium Nanodroplets
- Dispersed Fluorescence Spectra of 1H- and 1D-Indazole