FEASIBILITY STUDIES AND APPLICATION OF LASER /OPTICAL DIAGNOSTICS FOR CHARACTERISATION OF A PRACTICAL LOW-EMISSION GAS TURBINE COMBUSTOR

The present paper presents applications and feasibility studies of a number of laser spectroscopic techniques in a lean premixed prevaporised (LPP) combustor. Four different laser diagnostic techniques were investigated. The two more mature techniques, Planar Mie Scattering/Laser Induced Fluorescence and Planar Laser Induced Fluorescence of OH were used for fuel- and OH- visualisation, respectively. In addition, the applicability of some novel techniques in harsh industrial environments were investigated, two-line atomic fluorescence

(TLAF) to obtain 2-dimensional temperature distributions, and two-photon LIF for the detection of CO. In order to investigate the degree of turbulence an ultrafast framing camera was employed to record spontaneous emission.