Laser diagnostic methods for solid combustion products

ABSTRACTLaser diagnostic methods are developed and used to characterize the behavior of laser ablated zirconium carbide (ZrC). Emission from zirconium atoms dominates the total emission of the plasma plumes, which are estimated to have excitation temperatures of 9000 to 12,000 K under the conditions studied. Emission from species such as C, C2, and C3 were absent from the spectra due to the inherently low emission intensities of these species compared with that of Zr. Using a CCD camera, images of the plasma plumes are obtained from the emission and through the use of planar laser induced fluorescence of zirconium atoms.

Download Full-text

Study of growth kinetics and behaviour of particles in a helium-silane RF plasma using laser diagnostic methods

Plasma Sources Science and Technology ◽

10.1088/0963-0252/2/1/009 ◽

1993 ◽

Vol 2 (1) ◽

pp. 35-39 ◽

Cited By ~ 19

Author(s):

Y Watanabe ◽

M Shiratani ◽

M Yamashita

Keyword(s):

Growth Kinetics ◽

Diagnostic Methods ◽

Rf Plasma ◽

Laser Diagnostic

Download Full-text

Laser diagnostic methods - A summary

10.2514/6.1983-1683 ◽

1983 ◽

Cited By ~ 2

Author(s):

J. TROLINGER ◽

M. AZAZZY ◽

D. MODARRESS ◽

J. CRAIG

Keyword(s):

Diagnostic Methods ◽

Laser Diagnostic

Download Full-text

Numerical Investigation of Water Droplets Shape Influence on Mathematical Modeling Results of Its Evaporation in Motion through a High-Temperature Gas

Mathematical Problems in Engineering ◽

10.1155/2014/920480 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 13

Author(s):

Dmitrii O. Glushkov ◽

Genii V. Kuznetsov ◽

Pavel A. Strizhak

Keyword(s):

Mathematical Modeling ◽

High Temperature ◽

Numerical Investigation ◽

Combustion Products ◽

Droplet Surface ◽

Diagnostic Methods ◽

Experimental Investigations ◽

Two Phase ◽

Droplet Shape ◽

Time Motion

The numerical investigation of influence of a single water droplet shape on the mathematical modeling results of its evaporation in motion through high-temperature gases (combustion products of a typical condensed substance) has been executed. Values of evaporation time, motion velocity, and distance passed by various droplet shapes (cylinder, sphere, hemisphere, cone, and ellipsoid) in a high-temperature gases medium were analyzed. Conditions have been defined when a droplet surface configuration affects the integrated characteristics of its evaporation, besides temperature and combustion products concentration in a droplet trace, insignificantly. Experimental investigations for the verification of theoretical results have been carried out with using of optical diagnostic methods for two-phase gas-vapor-liquid flows.

Download Full-text

Flow Field and Structure of Swirl Stabilized Non-Premixed Natural Gas Flames at Elevated Pressure

Volume 1: Turbo Expo 2004 ◽

10.1115/gt2004-53340 ◽

2004 ◽

Cited By ~ 4

Author(s):

Bertram Janus ◽

Andreas Dreizler ◽

Johannes Janicka

Keyword(s):

Flow Field ◽

Gas Turbine ◽

Elevated Pressure ◽

Diagnostic Methods ◽

Computational Grids ◽

Flow Structures ◽

Gas Turbine Combustor ◽

Laser Diagnostic ◽

Recirculation Zones ◽

Inflow Conditions

This study reports on measurements in a generic non-premixed gas turbine combustor segment. Flow and scalar field were characterized using advanced laser diagnostic methods. The optically accessible burning chamber allowed for measurement of inflow conditions close-by the nozzle important for comparisons with numerical simulations. The generic nozzle design is sufficiently simplified to be precisely reproduced by block structured computational grids but shows typical features of gas turbine applications. To expose the influence of heat release on the flow field properties both isothermal and combusting conditions were investigated. Striking features of the present configuration are a detached flame, multiple recirculation zones, and complex coherent flow structures.

Download Full-text