Accession Number : ADA264515


Title :   A Novel Flame Thermometer Based on the Doppler Width of Ro-Vibrational Transitions


Descriptive Note : Final rept. Mar 1991-Aug 1992


Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD


Personal Author(s) : Dayton, David C ; Sausa, Rosario C ; Kotlar, Anthony J ; Miziolek, Andrzej W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a264515.pdf


Report Date : May 1993


Pagination or Media Count : 33


Abstract : A complete understanding of the complex network of chemical reactions occuring in flame environment requires the determination of spatially resolved species concentration and temperature profiles which, in turn, can be used as stringent tests for present and developing flame models. Temperature profiles have traditionally been measured using fine wire thermocouples, which can provide a high degree of spatial resolution in a flame given that thermocouples diameters are on the order of ten to hundred of microns. The thermocouple, however, constitutes a physical interfaces which may alter to the local flame environment. To minimize pertubations to the flame, thermocouples are made as small in diameter as possible and are often coated to reduce or eliminate surface catalytic effects. Another advantage of keeping the diameter of thermocouple as small as possible is that corrections made to the measured temperature for radiation losses and heat conduction are minimal.


Descriptors :   *COMBUSTION , *FLAMES , *THERMOCOUPLES , *THERMOMETERS , BERYLLIUM OXIDES , CARBON MONOXIDE , CATALYSIS , CHEMICAL REACTIONS , COATINGS , COLLISION BROADENING , CONDUCTION(HEAT TRANSFER) , DIAMETERS , DIODES , DOPPLER EFFECT , INFRARED SPECTROSCOPY , LOSSES , LOW PRESSURE , PERTURBATIONS , RADIATION , RESOLUTION , ROTATION , SPATIAL DISTRIBUTION , SURFACES , TEMPERATURE , TRANSLATIONS , TUNABLE LASERS , VIBRATION , WIDTH , YTTRIUM OXIDES


Subject Categories : Inorganic Chemistry
      Atomic and Molecular Physics and Spectroscopy
      Thermodynamics
      Combustion and Ignition


Distribution Statement : APPROVED FOR PUBLIC RELEASE