Low-speed flowfield characterization by infrared measurements of surface temperatures

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National Aeronautics and Space Administration, Langley Research Center, National Technical Information Service, distributor , Hampton, Va, [Springfield, Va
Other titlesLow speed flowfield characterization by infrared ..
StatementE. Gartenberg, A.S. Roberts, Jr., and G.J. McRee
SeriesNASA contractor report -- 181839, NASA contractor report -- NASA CR-181839
ContributionsRoberts, A. S, Langley Research Center
The Physical Object
FormatMicroform
Pagination1 v
ID Numbers
Open LibraryOL14972296M

Low-speed flowfield characterization by infrared measurements of surface temperatures - NASA/ADS An experimental program was aimed at identifying areas in low speed aerodynamic research where infrared imaging systems can make significant contributions.

Implementing a new technique, a long electrically heated wire was placed across a laminar jet. Get this from a library. Low-speed flowfield characterization by infrared measurements of surface temperatures. [Ehud Gartenberg; A S Roberts; Langley Research Center.].

Description Low-speed flowfield characterization by infrared measurements of surface temperatures FB2

FLOWFIELD CHARACTERIZATION USING INFRARED SURFACE TEMPERATURE MEASUREMENTS An extensive series of experiments was completed in the ODU low-speed wind tunnel where IR thermography was used to study flow separation over a NACA airfoil.

A unique method was devised to simultaneously observe in the IR spectrum tufts motion and the clean. AIREX: Low-speed flowfield characterization by infrared measurements of surface temperatures An experimental program was aimed at identifying areas in low speed aerodynamic research where infrared imaging systems can make significant contributions.

Implementing a new technique, a long electrically heated wire was placed across a laminar jet. Wind-tunnel measurements were used to identify and characterize the low-frequency oscillation present in the flowfield about an NACA airfoil with a horn-ice by: turbulence on time-averaged and time-resolved flowfield and surface heat transfer measurements are presented.

The first study in this thesis focuses on the effects of Reynolds number on the unsteady flowfield and time-averaged endwall heat transfer in the turbulent junction flowAuthor: Syed Samiul Elahi.

A SIMPLIFIED METHOD FOR MEASURING LAND SURFACE TEMPERATURE AND EMISSIVITY USING THERMAL INFRARED SPLIT-WINDOW CHANNELS Yunyue Yua*, Hui Xub, Dan Tarpleyc, Mitchell D. Goldberga aCenter for Satellite Applications and Research, NOAA/NESDIS, Auth Rd., Camp Springs, MD, USA Infrared images of a water surface experiencing evaporative convection were recorded as this film spread.

These images were converted to surface temperature fields. The amount of turbulent structure present in these fields changes dramatically across the by: Introduction. Since its demonstration in [1], the use of long-wave infrared (LWIR) CO 2 lasers in Digital Holography (DH) has been shown in an increasing number of applications.

In particular it allows observing large objects and in metrology it allows measuring large displacements while rendering holography more immune to environmental perturbations, compared to holography in the : Marc Georges, Jean-François Vandenrijt, Cédric Thizy, Igor Alexeenko, Igor Alexeenko, Giancarlo Pedr.

Measurements and Characterization National Renewable Energy Laboratory Cole Blvd., Golden, CO NREL is a national laboratory of the U.S. Department of Energy, ion comes from an undisturbed region of the surface, allowing true surface analysis with SIMS sensitivities.

Because the gage is made directly on the measurement surface and the total thickness is less than 2 microns, the presence of the gage contributes negligible flow and thermal disruption.

Infrared thermography is a measurement technique that enables to obtain non Intrusive measurements of surface temperatures. One of the interesting features of this technique is its ability to. For all measurements on active flows presented here, the viewing distance was less than 8 m, and for many measurements it was less than 2 m.

The viewing angle did not exceed 40° from the perpendicular and was, in most cases, between 0° and 20°. Download: Download full-size image. Fig. by: Surface temperature measurements within sliding contacts are useful since interfacial heat dissipation is closely linked to tribological behavior.

One of the most powerful techniques for such measurements is in-contact temperature mapping whereby a sliding contact is located beneath an infrared by: This work aims to achieve contactless absolute-temperature measurements of infrared-semi-transparent solids using an infrared thermal and spectroscopic imaging technique.

The multispectral thermo-transmittance coefficient fields in the 3–5 μm wavelength range for Sapphire, KBr, and Silicon are determined to be 6 × 10−4 K−1, 4 × 10−4 K−1, and −3 × 10−3 K−1, by: 2. Validation of Surface Temperature Measurements on a Combustor Liner Under Full-Load Conditions Using a Novel Thermal History Paint J.

Eng. Gas Turbines Power (April, ) Uncertainty Analysis of Solid-Liquid-Vapor Phase Change of a Metal Particle Subject to Nanosecond Laser HeatingCited by: 2. The albedo measurements for this study were performed mainly on nine 4 m by 4 m (13 ft by 13 ft) test sections constructed during the summer of at the University of California Pavement Center (UCPRC) test facilities in Davis, California (as shown in Fig.

2).The summary of each test section along with surface mix design and other characteristics is provided in Table by: New devices for flow measurements hot film and burial wire sensors, infrared imagery, liquid crystal, and piezo-electric model: final report for the period ended Hampton, Va.: [Springfield, Va: National Aeronautics and Space Administration, Langley Research Center ; National Technical Information Service, distributor.

MLA Citation. 3D Thermal Imaging: An approach towards true field temperature measurement by Samuel Petrocelli11, Thierry Sentenac2, Yannick Le Maoult3 1,2,3 Ecole des Mines d’Albi, ICA, Albi, France, [email protected], [email protected] 1,2 Laboratory for Analysis and Architecture of Systems, Toulouse, France, [email protected] Abstract.

The thermal-infrared (longwave) emission from a vegetated terrain is generally anisotropic, i.e., the emission temperature varies with the view direction.

If a directional measurement of temperature Cited by: surface skin temperature and infrared emissivity. Infrared imager data collocated within sounder fields of view can be used to identify uniform scenes as a simple cloud test (effective when Std.

Dev. measurements are proposed for use in snow/ice covered regions. Correlation of Heat Transfer Data Obtained by the Infrared Scanner and Temperature Sensitive Coating Techniques [Max E.

Hillsamer] on *FREE* shipping on qualifying offers. Correlation of Heat Transfer Data Obtained by the Infrared Scanner and Temperature Sensitive Coating TechniquesAuthor: Max E.

Download Low-speed flowfield characterization by infrared measurements of surface temperatures EPUB

Hillsamer. Application of thermographic temperature measurements in injection molding and blow molding of plastics Evaluation of internal boiler components and gases using a high-temperature infrared (IR) lens Author Spatial-temporal reconstruction of laser beam intensity distribution from the temperature along surface of the heated target.

TOPICS: Optical engineering, Photonics, Defense and security, Infrared technology, Remote sensing, Video, Safety, Heart, Medicine Read Abstract + Editor-in-Chief Michael Eismann discusses changes occurring because of the COVID19 pandemic.

temperature values measured by infrared thermography are considered close to their actual surface thermodynamic temperature. Tensile and Shear Stress A high-elongation extensometer from MTS was used for all experiments. A mm gauge steel sample was pulled at 10 strain/s ( mm/s).

The aluminum sampleFile Size: KB. An experimental investigation is conducted to develop and validate a quantitative methodology for identification and characterization of a laminar separation bubble based on infrared thermography m.

Dr. Wim de Jong. Senior Systems Engineer at TNO. SPIE Involvement: Author Missiles, Cameras, Infrared imaging, Imaging infrared seeker, Visibility, Device simulation, Infrared cameras, Infrared signatures, Atmospheric modeling, Atmospheric corrections Detectability of surface-laid landmines with a polarimetric IR sensor.

Frank Cremer. Dissertation: Low Speed Flowfield Characterization by Infrared Measurements of Surface Temperatures, Ehud Gartenberg.

Details Low-speed flowfield characterization by infrared measurements of surface temperatures EPUB

PDF. Thesis: Gender Differences in the Relation Between Locus of Control and Physiological Responses, Monique C. Grelot. PDF. Effects of Diluents on Soot Surface Temperature and Volume Fraction in Diluted Ethylene Diffusion Flames at Pressure.

Kailasanathan, J. Zhang, T. Fang, W. Roberts. Combustion Science and Technology (6), (). Estimation of Surface Temperature and Heat Flux by Inverse Heat Transfer Methods using Internal Temperatures Measured while Radiantly Heating a Carbon/Carbon Specimen up to °F Michelle Pizzo Intern, NASA Langley Research Center, Hampton, VA Front surface Size: 1MB.

The Sea and Land Surface Temperature Radiometer (SLSTR) is a nine channel visible and infrared high precision radiometer designed to provide climate data of global sea and land surface temperatures.

The SLSTR payload is destined to fly on the Ocean and Medium-Resolution Land Mission for the ESA/EU Global Monitoring for Environment and Security. Plasmas in high speed aerodynamics. P Bletzinger 1, B N Ganguly 3, the authors conclude that effectively steady state flowfield measurements are achieved after approximately four model diameters following passage through a temperature nonuniformity.

(near the cathode surface the gas temperature will be higher than in the positive column).Cited by: Dissertation: Low Speed Flowfield Characterization by Infrared Measurements of Surface Temperatures, Ehud Gartenberg.

PDF. Dissertation: Numerical Study of Three-Dimensional Separation and Flow Control at a Wing/Body Junction, Balakrishnan Lakshmanan.

PDF.