Temperature imaging in a supersonic free jet of combustion gases with two-line OH fluorescence.

Temperature measurements were performed in a shock-tunnel-generated free jet of hydrogen/oxygen reaction products diluted in argon with a nonsimultaneous, two-excitation-line planar laser-induced fluorescence technique with the hydroxyl radical (OH) as a tracer. Single-shot images were obtained with broadband excitation of isolated transitions in the A(2)Σ(+) ? X(2)Π(1, 0) band of OH near 282 nm, with broadband, temporally integrated detection of the resulting nonresonant emission. A measurement of the fluorescence lifetime in the free jet showed no variation with excited rotational level, allowing the rotational temperature to be obtained from the ratio of single-shot images with laser excitation of different rovibronic transitions.

[1]  S. Davis,et al.  Species and temperature imaging in liquid-fueled spray flames , 1990 .

[2]  Lynn A. Melton,et al.  Fluorescence Lifetime Imaging: An Approach for Fuel Equivalence Ratio Imaging , 1991 .

[3]  K. Kohse-Höinghaus,et al.  Measurements of rotational energy transfer and quenching in OHA2σ+,υ′ = 0 at elevated temperature , 1994 .

[4]  N. S. Bergano,et al.  Picosecond laser-spectroscopy measurement of hydroxyl fluorescence lifetime in flames. , 1983, Optics letters.

[5]  P. Erman,et al.  Precision Estimates of the Predissociation Rates of the OH A2Σ State (v ⩽ 2) , 1978 .

[6]  David R. Crosley,et al.  Relative transition probabilities and the electronic transition moment in the A-X system of OH , 1975 .

[7]  Y. Takubo,et al.  Absolute Density Measurement of OH Radicals in an Atmospheric Pressure Flame Using Time-Resolved Laser-Induced Fluorescence , 1987 .

[8]  T. B. Cook,et al.  Laser-excited fluorescence of the hydroxyl radical: relaxation coefficients at atmospheric pressure , 1983 .

[9]  H. M. Crosswhite,et al.  The ultraviolet bands of OH Fundamental data , 1962 .

[10]  Jerry M. Seitzman,et al.  Planar laser-fluorescence imaging of combustion gases , 1990 .

[11]  W. Kessler,et al.  Rotational level-dependent collisional broadening and line shift of the A2σ+−X2∏ (1, 0) band of OH in hydrogen-air combustion gases , 1993 .

[12]  C. F. Hess,et al.  Application of quantitative two-line OH planar laser-induced fluorescence for temporally resolved planar thermometry in reacting flows. , 1994, Applied optics.

[13]  H. Mettee.  Fluorescence and Phosphorescence of SO2 Vapor , 1968 .

[14]  D. Crosley,et al.  Energy transfer in A 2S+ OH. II. Vibrational , 1978 .

[15]  M. Cottereau,et al.  Time resolved study of rotational energy transfer in A 2Σ+(ν′ = 0) state of OH in a flame by laser induced fluorescence , 1981 .

[16]  R. Hanson,et al.  Planar laser-induced fluorescence imaging of shock-induced ignition , 1991 .

[17]  R. Hanson,et al.  Shock tunnel flow visualization using planar laser-induced fluorescence imaging of NO and OH , 1995 .

[18]  W. Ketterle,et al.  Absolute Temperature Fields in Flames by 2D-LIF of OH Using Excimer Lasers and CARS Spectroscopy , 1992 .

[19]  Ronald K. Hanson,et al.  Planar fluorescence imaging of a transverse jet in a supersonic crossflow , 1992 .

[20]  J. Wolfrum,et al.  Time-resolved LIF of OH(A 2Σ+, ν′=1 and ν′=0) in atmospheric-pressure flames using picosecond excitation , 1990 .

[21]  D. Crosley,et al.  Calculated rotational transition probabilities for the A−X system of OH , 1980 .

[22]  R. Hanson,et al.  Planar laser-induced fluorescence imaging of velocity and temperature in shock tunnel free jet flow , 1992 .

[23]  J. Jeffries,et al.  Quenching of A 2Σ+ OH at 300 K by several colliders , 1990 .

[24]  K. German.  Direct measurement of the radiative lifetimes of the A2Σ+ (V′ = 0) states of OH and OD , 1975 .

[25]  R. I. Soloukhin,et al.  Two-Dimensional Imaging of Flame Temperature Using Laser-Induced Fluorescence , 1985 .

[26]  R. Hanson,et al.  Temporally resolved, two-line fluorescence imaging of NO temperature in a transverse jet in a supersonic cross flow. , 1993, Applied optics.

[27]  R. Hanson,et al.  Imaging and characterization of OH structures in a turbulent nonpremixed flame , 1991 .

[28]  J. Wiesenfeld,et al.  Electronic quenching of highly rotationally excited OH(A 2Σ, ν′=0, 1) by H2O , 1988 .

[29]  U. Meier,et al.  State-specific rotational energy transfer in OH (A2Σ+, v′=0) by some combustion-relevant collision partners , 1992 .

[30]  K. Kohse-Höinghaus.  Laser techniques for the quantitative detection of reactive intermediates in combustion systems , 1991 .

[31]  R. Hanson,et al.  Two-line planar fluorescence for temporally resolved temperature imaging in a reacting supersonic flow over a body , 1993 .

[32]  R. Cattolica.  OH rotational temperature from two-line laser-excited fluorescence. , 1981, Applied optics.

[33]  H. M. Crosswhite,et al.  THE ULTRAVIOLET BANDS OF OH , 1975 .

[34]  R. Hanson,et al.  Single-shot OH PLIF thermometry in a reacting, supersonic free jet , 1995 .

[35]  W. Kessler,et al.  Velocity Field Imaging in Supersonic Reacting Flows near Atmospheric Pressure , 1994 .

[36]  Krishnan Radhakrishnan,et al.  LSENS, a general chemical kinetics and sensitivity analysis code for gas-phase reactions: User's guide , 1993 .

[37]  Jerry M. Seitzman,et al.  Comparison of NO and OH planar fluorescence temperature measurements in scramjet model flowfields , 1994 .

[38]  D. Crosley,et al.  Polarization of laser-induced fluorescence in OH in an atmospheric pressure flame. , 1984, Applied optics.

[39]  D. Crosley,et al.  Energy transfer in A 2Σ+ OH. I. Rotational , 1977 .

[40]  R. Hanson,et al.  PLIF measurements of temperature and velocity in a reacting supersonic free jet with OH , 1994 .

[41]  D. Crosley,et al.  Rotational energy transfer and LIF temperature measurements , 1982 .

[42]  R. Hanson,et al.  Single-shot velocimetry using planar laser-induced fluorescence imaging of nitric oxide , 1993 .

[43]  J. Daily,et al.  Measurement of temperature in flames using laser induced fluorescence spectroscopy of OH. , 1980, Applied optics.

[44]  P. Paul.  A model for temperature-dependent collisional quenching of OHA2∑+ , 1994 .

[45]  D. Crosley,et al.  Vibrational energy transfer and quenching of OH(A/sup 2/. sigma. /sup +/, v'= 1) , 1988 .

[46]  Steven Zabarnick.  Laser-induced fluorescence diagnostics and chemical kinetic modeling of a CH4/NO2/O2 flame at 55 torr , 1991 .

[47]  R. J. Kee,et al.  Chemkin-II : A Fortran Chemical Kinetics Package for the Analysis of Gas Phase Chemical Kinetics , 1991 .

[48]  K. German.  Collision and quenching cross sections in the A 2Σ+ state of OH and OD , 1976 .

[49]  R. Cattolica,et al.  Rotational-level-dependent quenching of OH A 2Σ(v′ = 1) by collisions with H2O in a low-pressure flame , 1991 .

[50]  J. Burris,et al.  Collisional deactivation rates for A 2Σ+ (ν′ = 1) state of OH , 1988 .

[51]  T. Just,et al.  Laser-induced saturated fluorescence as a method for the determination of radical concentrations in flames , 1983 .

[52]  U. Meier,et al.  Rotational energy transfer in OH (A 2Σ+, v’=0): A method for the direct determination of state‐to‐state transfer coefficients , 1990 .

[53]  J. Jeffries,et al.  The quantitative lif determination of OH concentrations in low-pressure flames , 1989 .

[54]  R. Hanson,et al.  Comparison of excitation techniques for quantitative fluorescence imaging of reacting flows , 1993 .

[55]  Vijay Kumar,et al.  Quantitative photoabsorption and flourescence spectroscopy of SO2 at 188–231 and 278.7–320 nm , 1992 .

[56]  L. Pfefferle,et al.  Planar laser-induced fluorescence of OH in a chemically reacting boundary layer. , 1988, Applied optics.

[57]  K. Kohse-Höinghaus,et al.  State-to-state rotational energy transfer in OH (A2Σ+, υ′=1) , 1993 .

[58]  D. Crosley,et al.  Vibrational energy transfer in laser-excited A(2)Sigma(+) OH as a flame thermometer. , 1980, Applied optics.

[59]  A. Masri,et al.  Quantitative imaging of temperature and OH in turbulent diffusion flames by using a single laser source. , 1994, Applied optics.

[60]  A. Dreizler,et al.  Time and spatially resolved LIF of OH A2Σ+(v′=1) in atmospheric-pressure flames using picosecond excitation , 1993 .

[61]  Marshall B. Long,et al.  Computational and experimental study of OH and CH radicals in axisymmetric laminar diffusion flames , 1992 .

[62]  N. Laurendeau,et al.  Time-resolved fluorescence investigation of rotational transfer in A 2 ∑ + (v = 0) OH , 1986 .