Turbulent Temperature Measurements Using an Nd:YAG Laser-based Dual-line Detection Rayleigh Scattering Technique
Author: M. V. Otugen
Publisher:
Published: 1997
Total Pages:
ISBN-13:
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Author: M. V. Otugen
Publisher:
Published: 1997
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
Published: 2018-07-02
Total Pages: 76
ISBN-13: 9781722131050
DOWNLOAD EBOOKNon-intrusive techniques for the dynamic measurement of gas flow properties such as density, temperature and velocity, are needed in the research leading to the development of new generation high-speed aircraft. Accurate velocity, temperature and density data obtained in ground testing and in-flight measurements can help understand the flow physics leading to transition and turbulence in supersonic, high-altitude flight. Such non-intrusive measurement techniques can also be used to study combustion processes of hydrocarbon fuels in aircraft engines. Reliable, time and space resolved temperature measurements in various combustor configurations can lead to a better understanding of high temperature chemical reaction dynamics thus leading to improved modeling and better prediction of such flows. In view of this, a research program was initiated at Polytechnic University's Aerodynamics Laboratory with support from NASA Lewis Research Center through grants NAG3-1301 and NAG3-1690. The overall objective of this program has been to develop laser-based, non-contact, space- and time-resolved temperature and velocity measurement techniques. In the initial phase of the program a ND: YAG laser-based dual-line Rayleigh scattering technique was developed and tested for the accurate measurement of gas temperature in the presence of background laser glare. Effort was next directed towards the development of a filtered, spectrally-resolved Rayleigh/Mie scattering technique with the objective of developing an interferometric method for time-frozen velocity measurements in high-speed flows utilizing the uv line of an ND: YAG laser and an appropriate molecular absorption filter. This effort included both a search for an appropriate filter material for the 266 nm laser line and the development and testing of several image processing techniques for the fast processing of Fabry-Perot images for velocity and temperature information. Finally, work was also carried out for the development of a.
Author:
Publisher:
Published: 1996
Total Pages: 228
ISBN-13:
DOWNLOAD EBOOKAuthor: Alan C. Eckbreth
Publisher: CRC Press
Published: 1996-10-10
Total Pages: 636
ISBN-13: 9789056995324
DOWNLOAD EBOOKFocusing on spectroscopically-based, spatially-precise, laser techniques for temperature and chemical composition measurements in reacting and non-reacting flows, this book makes these powerful and important new tools in combustion research
Author:
Publisher:
Published: 1994
Total Pages: 1036
ISBN-13:
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Publisher:
Published: 1997
Total Pages: 754
ISBN-13:
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Published: 1999
Total Pages: 974
ISBN-13:
DOWNLOAD EBOOKAuthor: Jag J. Singh
Publisher:
Published: 1992
Total Pages: 448
ISBN-13:
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Publisher:
Published: 1995
Total Pages: 14
ISBN-13:
DOWNLOAD EBOOKAuthor: Joseph Norman Forkey
Publisher:
Published: 1996
Total Pages: 594
ISBN-13:
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