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Saturday, May 9, 2020 | History

3 edition of Quantitative PLIF imaging in high-pressure combustion found in the catalog.

Quantitative PLIF imaging in high-pressure combustion

Quantitative PLIF imaging in high-pressure combustion

final technical report for the period June 11, 1990 to September 20, 1996

  • 340 Want to read
  • 38 Currently reading

Published by High Temperature Gasdynamics Laboratory, Mechanical Engineering Department, Stanford University, National Aeronautics and Space Administration, National Technical Information Service, distributor in Stanford, CA, [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Laser induced fluorescence.,
  • Combustion products.,
  • Imaging techniques.,
  • High temperature gases.,
  • Gas turbine engines.,
  • Aircraft engines.,
  • Nitrogen.,
  • Oxygen.,
  • Hydrogen.

  • Edition Notes

    Other titlesQuantitative PLIF imaging in high pressure combustion., Final technical report on quantitative PLIF imaging in high-pressure combustion.
    Statementsubmitted by: R.K. Hanson.
    Series[NASA contractor report] -- NASA-CR-205685., NASA contractor report -- NASA CR-205685.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15491513M

    Pergamon Prog. Energy Combust. ScL Vol. 20, pp. , Copynght © Elsevier Science Ltd Printed in Great Britain. All rights reserved f94 $ Laser-induced fluorescence imaging of aluminum atoms (Al-PLIF) is used to analyze the spatio-temporal behavior of aluminized solid propellant combustion. Using alternating LIF and chemiluminescence emission images of the particles in the gaseous and liquid phase evolving close to and far above the dynamically varying propellant surface, sequences of images were recorded and : Gautier Vilmart, Nelly Dorval, Robin Devillers, Yves Fabignon, Brigitte Attal-Trétout, Alexandre Bre.

    Three-Dimensional Coherent X-Ray Diffraction Imaging of Molten Iron in Mantle Olivine at Nanoscale Resolution Huaidong Jiang,1 Rui Xu,2 Chien-Chun Chen,2 Wenge Yang,3 Jiadong Fan,1 Xutang Tao,1 Changyong Song,4 Yoshiki Kohmura,4 Tiqiao Xiao,5 Yong Wang,5 Yingwei Fei,6 Tetsuya Ishikawa,4 Wendy L. Mao,7,8 and Jianwei Miao2,* 1State Key Laboratory of Crystal Materials, Shandong .   High-speed (12 kHz) imaging of combustion luminosity (enhanced by using a sodium fuel additive) has been analyzed and compared to crank angle resolved heat release rates and mass fraction burn profiles in a spray-guided spark-ignited direct-injection (SG-SIDI) optical single-cylinder engine. The addCited by:

    of the Combustion Institute, Atlanta, GA, March *Approximately prior publications in this category typically involving preliminary versions of the above journal articles and book chapters. Book chapters. 1. J. P. Gore and L. X. Zhu, "Thermal Imaging for Biological and Medical Diagnostics," Biomedical Photonics Handbook, Tuan Vo Dinh. The article presents the results of experimental and numerical investigation of turbulent premixed methane flames diluted by carbon dioxide (up to 30%) at atmospheric and elevated pressures (up to MPa). The study included the influence of fuel properties and operation parameters on the emission of NOx and CO as well as flame properties. The investigation has been prepared for two Author: Rafał Ślefarski.


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Quantitative PLIF imaging in high-pressure combustion Download PDF EPUB FB2

Get this from a library. Quantitative PLIF imaging in high-pressure combustion: final technical report for the period J to Septem [R K Hanson; United States. National Aeronautics and Space Administration.]. Planar laser-induced fluorescence (PLIF) images of NO concentration are reported in premixed laminar flames from 1–60bar exciting the A-X(0,0) band.

Quantitative NO-LIF imaging in high. Quantitative imaging of nitric oxide concentrations and temperature using laser-induced fluorescence (LIF) in practical combustion systems has attracted much attention in recent years [1].

title = "Quantitative NO-LIF imaging in high-pressure flames", abstract = "Planar laser-induced fluorescence (PLIF) images of NO concentration are reported in premixed laminar flames from bar exciting the A - X(0, 0) by: Planar laser-induced fluorescence (PLIF) is an optical diagnostic technique widely used for flow visualization and quantitative measurements.

PLIF has been shown to be used for velocity, concentration, temperature and pressure measurements. 2 Basic principles. 3 Comparison with other techniques. Planar laser-induced fluorescence (PLIF) images of NO concentration are reported in premixed laminar flames from 1–60 bar exciting the A-X(0,0) band.

The influence of O2 interference and gas composition, the variation with local temperature, and the effect of laser and signal attenuation by UV light absorption are investigated.

Despite choosing a NO excitation and detection scheme with Cited by: @article{osti_, title = {Quantitative Imaging of Turbulent Mixing Dynamics in High-Pressure Fuel Injection to Enable Predictive Simulations of Engine Combustion}, author = {Frank, Jonathan H.

and Pickett, Lyle M. and Bisson, Scott E. and Patterson, Brian D. and Ruggles, Adam J. and Skeen, Scott A. and Manin, Julien Luc and Huang, Erxiong and Cicone, Dave J.

and Sphicas, Panos. In order to interpret concentration measurements using planar laser-induced fluorescence (PLIF), it is necessary to understand the systematic and statistical errors that accompany those measurements. High-power lasers provide both increased signal-to-noise ratios (desirable) and intensity-induced deviations from linearity (undesirable).

This paper reviews and argues for Cited by: The planar laser-induced fluorescence [] is a high-sensitivity and high-resolution laser spectral diagnostic technique developed in the emergence of PLIF technology has made great success in the visualization of the combustion field in flames, the dynamic evolution of the combustion process [2, 3], the temperature imaging [4, 5], and the quantitative measurements of the free radical Author: Zhen Yang, Xin Yu, Jiangbo Peng, Jianlong Zhang.

Get this from a library. Tracer-based planar laser-induced fluorescence diagnostics: quantitative photophysics and time-resolved imaging. [Brian Ho-yin Cheung; Ronald Hanson; C F Edwards; Mark Godfrey Mungal; Stanford University.

Department of Mechanical Engineering.] -- Two advances to tracer-based planar laser-induced fluorescence (PLIF) diagnostics are presented in this work.

Quantitative Thermochemical Measurements in High-Pressure Gaseous Combustion Jun J. Kojima (presentor) Ohio Aerospace Institute, Cedar Point Rd, Cleveland, OHUSA David G.

Fischer NASA Glenn Research Center, Brookpark Rd, Cleveland, OHUSA Abstract We present our strategic experiment and thermochemical analyses on Author: Jun J. Kojima, David G. Fischer. In this LDRD project, we developed a capability for quantitative high - speed imaging measurements of high - pressure fuel injection dynamics to advance understanding of turbulent mixing in transcritical flows, ignition, and flame stabilization mechanisms, and to provide e ssential validation data for developing predictive tools for engine combustion simulations.

Infrared planar laser-induced fluorescence imaging and applications to imaging of carbon monoxide and carbon dioxide. Morris, Christopher I.

Shock-induced combustion in high-speed wedge flows. Rossmann, Tobias (). An experimental investigation of. Simultaneous schlieren (with soot luminosity imaging) and nm planar laser-induced fluorescence (PLIF) imaging for formaldehyde (CH 2 O) and polycyclic aromatic hydrocarbons (PAH) visualization was performed.

At both K and K ambient, main injection exhibits a reduction in ignition delay (ID) by a factor of 2 over their respective by: 7. Combustion test diagnosis has always been one of the most important technologies for the development of aerospace engineering. The traditional methods of measurement have been unable to meet the requirements of accurate capture of the flow field in the development process of the aeroengine combustor.

Therefore, the development of high-precision measurement and diagnostic techniques to Cited by: 2. This approach is called planar laser-induced fluorescence (PLIF) imaging and provides a two-dimensional visualization of target species concentration distribution in the flowfield.

Assuming the use of a single short laser pulse with rapid fluorescence, this diagnostic method is highly quantitative with regard to space and time, providing Cited by: 1 oh-plif measurements and accuracy investigation in high pressure gh2/go2 combustion by aravind vaidyanathan a dissertation presented to the graduate school of the university of flor ida in partial fulfillment of the requirements for the degree of doctor of philosophy university of florida page 2 2 aravind vaidyanathan page 3.

Introduction. The non-intrusive laser imaging diagnostics “particle image velocimetry” (PIV) and “planar laser-induced fluorescence” of combustion radicals, such as hydroxyl (OH-PLIF) or tracers such as toluene or biacetyl (tracer-PLIF), are important tools for studying the dynamics of turbulent flames in gas turbine (GT) by: Dr.

Adam Steinberg is an Associate Professor in the Daniel Guggenheim School of Aerospace Engineering. Prior to joining the AE faculty, Prof.

Steinberg was on the faculty of the University of Toronto Institute for Aerospace Studies () and served as a research scientist at the German Aerospace Center (). The term "schlieren imaging" is commonly used as a synonym for schlieren photography, though this article particularly treats visualization of the pressure field produced by ultrasonic transducers, generally in water or tissue-mimicking method provides a two-dimensional (2D) projection image of the acoustic beam in real-time ("live video").

The wavelength modulation spectroscopy (WMS) technique has been demonstrated as a powerful and indispensable tool for quantitative and real-time measurements on the combustion process of various industrial devices.

However, the varying pressure occurred in the aero-engine combustor significantly affects the accuracy and efficiency of the WMS by: 8.Combustion and Flame(). [10 pages] All Fiber-Coupled OH Planar Laser-Induced-Fluorescence (OH-PLIF)-Based Two-Dimensional Thermometry Paul S.

Hsu, Naibo Jiang, Anil K. Patnaik, Vish Katta, Sukesh Roy, and James R. Gord Applied Spectroscopy 72 (4), (). [7 pages] FLEET Velocimetry for Combustion and Flow Diagnostics.Laser diagnostics for quantitative measurements of temperature are important in high pressure and high temperature environments.

In this study, Laser Induced Thermal Grating Spectroscopy (LITGS) is employed for oxygen enriched CH$_{4}$/O$_{2}$/N$_{2}$ laminar flames at elevated pressure. The wavelength of the pump beam was set for OH : A Hayakawa, S Lowe, K Takeuchi, T Yamagami, T Kudo, Y Gao, S Hochgreb, H Kobayashi.