Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Andrew W. Caswell"'
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 145
An experimental study is conducted on bluff-body stabilized premixed flames in a curved, square cross section duct. High flow velocities coupled with a small radius of curvature of the duct induce high centrifugal acceleration normal to the flame she
Publikováno v:
Journal of Propulsion and Power. 37:553-563
The detrended fluctuation analysis, a technique for detecting long-range correlations in fractal time series, is used to characterize thermoacoustic oscillations of impending combustion instabiliti...
Publikováno v:
Proceedings of the Combustion Institute. 38:3787-3795
The structure and dynamics of a hydrogen-air rotating detonation engine (RDE) are described based on 100-kHz laser absorption spectroscopy measurements of water temperature at four simultaneous locations within the detonation channel. The analysis fo
Publikováno v:
Proceedings of the Combustion Institute. 38:6327-6335
New observations are reported of the processes leading up to lean blowoff (LBO) in a two-dimensional confined bluff body flame by visualizing LBO from a spanwise perspective. Time-resolved OH* chemiluminescence imaging simultaneous with particle imag
Publikováno v:
AIAA SCITECH 2022 Forum.
Fast and Unbiased Determination of Dominant Frequencies and Amplitude of Thermoacoustic Oscillations
Autor:
Sukesh Roy, M. J. Casiano, Douglas G. Talley, Christopher A. Fugger, Andrew W. Caswell, Tongxun Yi, Robert J. Jensen
Publikováno v:
Journal of Propulsion and Power. 36:702-714
Reported is a three-step procedure (also referred to as the observer) for fast and unbiased determination of the dominant frequencies and amplitude of thermoacoustic oscillations. The first step is...
Publikováno v:
Combustion and Flame. 216:58-61
Publikováno v:
AIAA Propulsion and Energy 2021 Forum.
Autor:
Stephen A. Schumaker, Stephen W. Grib, Sukesh Roy, Daniel K. Lauriola, Naibo Jiang, Andrew W. Caswell, Paul S. Hsu
Publikováno v:
Applied optics. 60(15)
10 kHz two-color OH planar laser-induced fluorescence (PLIF) thermometry was demonstrated in both laminar Hencken flames and turbulent premixed jet flames using two injection-seeded optical parametric oscillators (OPOs) pumped by a high-speed three-l
Publikováno v:
Proceedings of the Combustion Institute. 37:1461-1469
This study characterizes the structure and dynamics of a confined, bluff-body-stabilized turbulent premixed flame by simultaneously employing formaldehyde (CH2O) and hydroxyl (OH) planar laser-induced fluorescence (PLIF) and particle image velocimetr