Peter Weigand

TL;DR: In this paper, a spray configuration for premixed gas turbine flames was operated with CH4 and air at atmospheric pressure, and a flame with P = 25 ǫkW thermal power and an equivalence ratio of Φ = 0.7 was chosen as a target flame in order to analyze the dynamics and the feedback mechanism of the periodic instability in detail.

TL;DR: A gas turbine model combustor for swirling CH 4 /air diffusion flames at atmospheric pressure with good optical access for detailed laser measurements is discussed in this article, where three flames with thermal powers between 76 and 349 kW and overall equivalence ratios between 055 and 075 were investigated.

TL;DR: In this article, a gas turbine model combustor for swirling CH{sub 4}/air diffusion flames at atmospheric pressure with good optical access for detailed laser measurements is discussed, and three flames with thermal powers between 7.6 and 34.9 kW and overall equivalence ratios between 0.55 and 0.75 were investigated.

TL;DR: In this paper, phase-correlated measurements of different species in a turbulent swirl flame with a self-excited instability are presented for the first time, where phase-resolved OH* chemiluminescence and planar laser-induced fluorescence (PLIF) spectroscopy of OH, CH, and H 2 CO are used to follow the temporal evolution of flame structures in a pulsating swirl-stabilized model injector for gas-turbine applications.

TL;DR: In this article, phase-locked laser Raman scattering was applied in order to determine the major species concentrations, temperature, and mixture fraction in a gas turbine model combustor using laser diagnostic techniques.