TY - GEN
T1 - CFD analysis of a model combustor ignition and comparison with experimental results
AU - Haidn, Oskar J.
AU - Palkina, Irina
AU - Gernoth, Andreas
AU - Riccius, Jörg R.
PY - 2007
Y1 - 2007
N2 - The ignition in a Micro Combustor, tested at the test facility M3 at DLR Lampoldshausen is modeled by the Eddy Dissipation Model (EDM). In order to avoid the EDM-typical over-prediction of the reaction rate in the wall boundary layers (flame "creeping" along walls), the reaction is disabled within 3 mm distance of the walls. Also, the reaction is disabled for temperatures of 400 K or lower, in order to reduce inaccuracies of burning velocities and possible flash backs. The SST turbulence model according to Menter (a blending of the k-ε and the k-ω models with automatic choice of linear/logarithmic near wall profiles) is applied for the analysis of the pre-ignition cold flow as well as for the ignition. A hexahedron mesh on a 1° segment of the supply domes, the injector, the combustor and a small ambient exit area is used. Finally, the numerical results are compared with experimental results.
AB - The ignition in a Micro Combustor, tested at the test facility M3 at DLR Lampoldshausen is modeled by the Eddy Dissipation Model (EDM). In order to avoid the EDM-typical over-prediction of the reaction rate in the wall boundary layers (flame "creeping" along walls), the reaction is disabled within 3 mm distance of the walls. Also, the reaction is disabled for temperatures of 400 K or lower, in order to reduce inaccuracies of burning velocities and possible flash backs. The SST turbulence model according to Menter (a blending of the k-ε and the k-ω models with automatic choice of linear/logarithmic near wall profiles) is applied for the analysis of the pre-ignition cold flow as well as for the ignition. A hexahedron mesh on a 1° segment of the supply domes, the injector, the combustor and a small ambient exit area is used. Finally, the numerical results are compared with experimental results.
UR - https://www.scopus.com/pages/publications/36749076991
M3 - Conference contribution
AN - SCOPUS:36749076991
SN - 1563479036
SN - 9781563479038
T3 - Collection of Technical Papers - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference
SP - 4239
EP - 4248
BT - Collection of Technical Papers - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference
T2 - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference
Y2 - 8 July 2007 through 11 July 2007
ER -