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Reduced Kinetic Schemes For Modelling Nitric Oxide No Formation And Its Detection Using Laser Induced Fluorescence Lif
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Book Synopsis Reduced Kinetic Schemes for Modelling Nitric Oxide (NO) Formation and Its Detection Using Laser Induced Fluorescence (LIF). by : Harwell Laboratory. Coal R & D Programme
Download or read book Reduced Kinetic Schemes for Modelling Nitric Oxide (NO) Formation and Its Detection Using Laser Induced Fluorescence (LIF). written by Harwell Laboratory. Coal R & D Programme and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reduced Kinetic Schemes for Modelling Nitric Oxide (NO) Formation and Its Detection Using Laser Induced Fluorescence (LIF). by : Harwell Laboratory. Coal R & D Programme
Download or read book Reduced Kinetic Schemes for Modelling Nitric Oxide (NO) Formation and Its Detection Using Laser Induced Fluorescence (LIF). written by Harwell Laboratory. Coal R & D Programme and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reducing Kinetic Schemes for Modelling Nitric Oxide Formation And*its Detection Using Laser Induced Flourescence by : A. Astill
Download or read book Reducing Kinetic Schemes for Modelling Nitric Oxide Formation And*its Detection Using Laser Induced Flourescence written by A. Astill and published by . This book was released on 1996 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721932672 Total Pages :286 pages Book Rating :4.9/5 (326 download)
Book Synopsis Measurements and Modeling of Nitric Oxide Formation in Counterflow, Premixed Ch4/O2/N2 Flames by : National Aeronautics and Space Administration (NASA)
Download or read book Measurements and Modeling of Nitric Oxide Formation in Counterflow, Premixed Ch4/O2/N2 Flames written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-27 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-induced fluorescence (LIF) measurements of NO concentration in a variety of CH4/O2/N2 flames are used to evaluate the chemical kinetics of NO formation. The analysis begins with previous measurements in flat, laminar, premixed CH4/O2/N2 flames stabilized on a water-cooled McKenna burner at pressures ranging from 1 to 14.6 atm, equivalence ratios from 0.5 to 1.6, and volumetric nitrogen/oxygen dilution ratios of 2.2, 3.1 and 3.76. These measured results are compared to predictions to determine the capabilities and limitations of the comprehensive kinetic mechanism developed by the Gas Research Institute (GRI), version 2.11. The model is shown to predict well the qualitative trends of NO formation in lean-premixed flames, while quantitatively underpredicting NO concentration by 30-50%. For rich flames, the model is unable to even qualitatively match the experimental results. These flames were found to be limited by low temperatures and an inability to separate the flame from the burner surface. In response to these limitations, a counterflow burner was designed for use in opposed premixed flame studies. A new LIF calibration technique was developed and applied to obtain quantitative measurements of NO concentration in laminar, counterflow premixed, CH4/O2/N2 flames at pressures ranging from 1 to 5.1 atm, equivalence ratios of 0.6 to 1.5, and an N2/O2 dilution ratio of 3.76. The counterflow premixed flame measurements are combined with measurements in burner-stabilized premixed flames and counterflow diffusion flames to build a comprehensive database for analysis of the GRI kinetic mechanism. Pathways, quantitative reaction path and sensitivity analyses are applied to the GRI mechanism for these flame conditions. The prompt NO mechanism is found to severely underpredict the amount of NO formed in rich premixed and nitrogen-diluted diffusion flames. This underprediction is traced to uncertainties in the CH kinetics as well as in the nitrogen oxidation chemistry. S
Book Synopsis Detailed Modeling and Laser-induced Fluorescence Imaging of Nitric Oxide in a NH(i)-seeded Non-premixed Methane by :
Download or read book Detailed Modeling and Laser-induced Fluorescence Imaging of Nitric Oxide in a NH(i)-seeded Non-premixed Methane written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper we study the formation of NO in laminar, nitrogen diluted methane diffusion flames that are seeded with ammonia in the fuel stream. We have performed numerical simulations with detailed chemistry as well as laser-induced fluorescence imaging measurements for a range of ammonia injection rates. For comparison with the experimental data, synthetic LIF images are calculated based on the numerical data accounting for temperature and fluorescence quenching effects. We demonstrate good agreement between measurements and computations. The LIF corrections inferred from the simulation are then used to calculate absolute NO mole fractions from the measured signal. The NO formation in both doped and undoped flames occurs in the flame sheet. In the undoped flame, four different mechanisms including thermal and prompt NO appear to contribute to NO formation. As the NH3 seeding level increases, fuel-NO becomes the dominant mechanism and N2 shifts from being a net reactant to being a net product. Nitric oxide in the undoped flame as well as in the core region of the doped flames are underpredicted by the model; we attribute this mainly to inaccuracies in the NO recycling chemistry on the fuel-rich side of the flame sheet.
Book Synopsis Joint Meeting of the U.S. Sections of the Combustion Institute, Western States, Central States, Eastern States by :
Download or read book Joint Meeting of the U.S. Sections of the Combustion Institute, Western States, Central States, Eastern States written by and published by . This book was released on 1999 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitric Oxide Studies in Low Temperature Plasmas Generated with a Nanosecond Pulse Sphere Gap Electrical Discharge by : David Dean Burnette
Download or read book Nitric Oxide Studies in Low Temperature Plasmas Generated with a Nanosecond Pulse Sphere Gap Electrical Discharge written by David Dean Burnette and published by . This book was released on 2014 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents studies of NO kinetics in a plasma afterglow using various nanosecond pulse discharges across a sphere gap. The discharge platform is developed to produce a diffuse plasma volume large enough to allow for laser diagnostics in a plasma that is rich in vibrationally-excited molecules. This plasma is characterized by current and voltage traces as well as ICCD and NO PLIF images that are used to monitor the plasma dimensions and uniformity. Temperature and vibrational loading measurements are performed via coherent anti-Stokes Raman spectroscopy (CARS). Absolute NO concentrations are obtained by laser-induce fluorescence (LIF) measurements, and N and O densities are found using two photon absorption laser-induced fluorescence (TALIF). For all dry air conditions studied, the NO behavior is characterized by a rapid rate of formation consistent with an enhanced Zeldovich process involving electronically-excited nitrogen species that are generated within the plasma. After several microseconds, the NO evolution is entirely controlled by the reverse Zeldovich process. These results show that under the chosen range of conditions and even in extreme instances of vibrational loading, there is no formation channel beyond ~2 [mu]sec. Both the NO formation and consumption mechanisms are strongly affected by the addition of fuel species, producing much greater NO concentrations in the afterglow.
Book Synopsis Nitric Oxide Formation Analysis Using Chemical Reactor Modelling and Laser Induced Fluorescence Measurements on Industrial Swirl Flames by : Syed Mashruk
Download or read book Nitric Oxide Formation Analysis Using Chemical Reactor Modelling and Laser Induced Fluorescence Measurements on Industrial Swirl Flames written by Syed Mashruk and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Induced Fluorescence Measurements and Modeling of Nitric Oxide in High-pressure Premixed Flames by :
Download or read book Laser Induced Fluorescence Measurements and Modeling of Nitric Oxide in High-pressure Premixed Flames written by and published by . This book was released on 1994 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitric Oxide Sensing by : Sagarika Bhattacharya
Download or read book Nitric Oxide Sensing written by Sagarika Bhattacharya and published by CRC Press. This book was released on 2021-09-16 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although nitric oxide (NO) is an important biological signaling molecule, its free-radical electronic configuration makes it a most reactive molecule and the scariest colorless gas causing immense environmental and health hazards. Detection of NO levels in biological samples and in the atmosphere is therefore crucial. In the past few years, extensive efforts have been devoted to developing many active sensors and effective devices for detecting and quantifying atmospheric NO, NO generated in biological samples, and NO exhaled in the human breath. This book provides a concrete summary of recent state-of-the-art small-molecule probes and novel carbon nanomaterials used for chemical, photoluminescent, and electrochemical NO detection. One chapter is especially dedicated to the available devices used for detecting NO in the human breath that indirectly infers to lung inflammation. The authors with expertise in diverse dimensions have attempted to cover almost all areas of NO sensing.
Book Synopsis Measurements and Modeling of Nitric Oxide Formation in Counterflow, Premixed CH4/O2/N2 Flames by :
Download or read book Measurements and Modeling of Nitric Oxide Formation in Counterflow, Premixed CH4/O2/N2 Flames written by and published by . This book was released on 2000 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Assessment and Enhancement of Planar Laser-Induced Fluorescence Measurements of Nitric Oxide in an Inverse Diffusion Flame by :
Download or read book Experimental Assessment and Enhancement of Planar Laser-Induced Fluorescence Measurements of Nitric Oxide in an Inverse Diffusion Flame written by and published by . This book was released on 1997 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Atomic Nitrogen in Low Pressure Discharges by Two-Photon Laser Induced Fluorescence by : Steven Frank Adams
Download or read book Studies of Atomic Nitrogen in Low Pressure Discharges by Two-Photon Laser Induced Fluorescence written by Steven Frank Adams and published by . This book was released on 1999-07-01 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of diagnostic experiments have been compiled to investigate rf and microwave discharges in N2, such as those used for plasma processing of electronic materials. To develop a picture, as complete as possible, of the discharge chemistry, several reactive intermediates, e.g. N, N2(A), N2(B) and N2(C), were monitored. An alternative two-photon laser induced fluorescence (TALIF) scheme for detection of atomic nitrogen has been characterized and used to monitor and evaluate various atomic nitrogen sources. Photodissociation of N2O and subsequent detection of N atom photofragments by TALIF was also performed using the 207 NM laser pulse. From measurements within the pulsed rf discharge, a kinetic model was developed which predicted absolute concentrations of various discharge species. The behavior of several discharge species were also monitored in the N2 microwave discharge and compared to the model for the addition of small amounts of H2 and NH3. Atomic nitrogen destruction by surface and volume reaction was investigated by temporal N atom decay within a pulsed rf discharge. The volume loss rate of atomic nitrogen was also quantified to be substantially increased with the addition of as little as 0.1% O2 in an N2 rf discharge.
Book Synopsis Sensitive Detection of Nitric Oxide by 2-photon Laser-induced Fluorescence Spectroscopy by : D. A. Landis
Download or read book Sensitive Detection of Nitric Oxide by 2-photon Laser-induced Fluorescence Spectroscopy written by D. A. Landis and published by . This book was released on 1993 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis British Reports, Translations and Theses by : British Library. Document Supply Centre
Download or read book British Reports, Translations and Theses written by British Library. Document Supply Centre and published by . This book was released on 1996 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Planar Laser-induced Fluorescence of Nitric Oxide in Isomeric Butanol and Butane Stagnation Flames by : Gregory Chung
Download or read book Planar Laser-induced Fluorescence of Nitric Oxide in Isomeric Butanol and Butane Stagnation Flames written by Gregory Chung and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The significant efforts to reduce global fossil fuel dependence have led to the development of biofuels as an alternative. Despite their growing significance, alcohol biofuels still require fundamental study, particularly in the area of NOx emissions. Planar laser-induced fluorescence (PLIF) was used to obtain nitric oxide (NO) production profiles from stagnation flames of premixed n- and iso-butanol; n- and iso-butane flames were also measured to offer context with alkane fuels. PLIF measurements were corrected for laser sheet variations and non-radiative quenching by signalpost-processing and quantified with a NO-seeding calibration method. Particle-image velocimetry (PIV) was performed to characterize the centreline velocity of the experimental flow which was then used for chemical kinetic simulations of the experiment. Simulations were performed for n-butanol and n-butane flames with a combined NOxsubmechanism. Experimentally, butanol fuels were found to ...
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
