TY - GEN
T1 - Detection of unburned hydrocarbons (UHC) in an atmospheric pressure combustor with premixing and prevaporization using a tuneable excimer laser
AU - Lachner, Rudolf
AU - Theisen, Daniel
AU - Kettl, Hans
AU - Fink, Rainer
AU - Rist, Dieter
AU - Schmid, Achim
AU - Hönig, Rainer
AU - Kappler, Günter
PY - 1996
Y1 - 1996
N2 - Gaseous unburned hydrocarbons (UHC) arc investigated in an atmospheric pressure combuslor with premixing and prevaporization. The rectangular combustion chamber'is equipped with silica quart/windows allowing laser-based investigations in the UV regime. A new double shell concept is employed to atomize the fuel (n-heptane) and to stabilize the flame. Tor the detection of UHC, a tuneable ArF (λ ≈ 193 nm) or KrF (λ ≈ 248 nm) excimer laser is used. The results show that this imaging technique is feasible in an atmospheric pressure, liquid fuelled combuslor. Liquid and gaseous fuel is detected inside the vortices induced by the double shell, where the main combustion processes occur. l-'uHhermore, droplets and UHC can be found along the symmetry line of the double shell. Comparing the two approaches used for the visualization of UHC. it turns out that the application of a KrF laser seems to be more suitable.
AB - Gaseous unburned hydrocarbons (UHC) arc investigated in an atmospheric pressure combuslor with premixing and prevaporization. The rectangular combustion chamber'is equipped with silica quart/windows allowing laser-based investigations in the UV regime. A new double shell concept is employed to atomize the fuel (n-heptane) and to stabilize the flame. Tor the detection of UHC, a tuneable ArF (λ ≈ 193 nm) or KrF (λ ≈ 248 nm) excimer laser is used. The results show that this imaging technique is feasible in an atmospheric pressure, liquid fuelled combuslor. Liquid and gaseous fuel is detected inside the vortices induced by the double shell, where the main combustion processes occur. l-'uHhermore, droplets and UHC can be found along the symmetry line of the double shell. Comparing the two approaches used for the visualization of UHC. it turns out that the application of a KrF laser seems to be more suitable.
UR - http://www.scopus.com/inward/record.url?scp=84928473326&partnerID=8YFLogxK
U2 - 10.1115/96TA059
DO - 10.1115/96TA059
M3 - Conference contribution
AN - SCOPUS:84928473326
T3 - Proceedings of the ASME Turbo Expo
BT - ASME 1996 Turbo Asia Conference, TA 1996
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 1996 Turbo Asia Conference, TA 1996
Y2 - 5 November 1996 through 7 November 1996
ER -