Laser Ignition in a Micro Combustor
Schmidt, V. and Oschwald, M. and Lacaze, G. (2009) Laser Ignition in a Micro Combustor. In: Alternative Ignition Systems ProcessEng Engineering. pp. 97-131. ISBN 978-3-902655-05-9.
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Ignition in cryogenic rocket engines is a critical phase during which small anomalies in the sequence timing can lead to the destruction of the chamber. The understanding of ignition processes taking place in such devices is scientifically very challenging and a key-point in terms of technical design. The M3 test rig operated at the German Space Center (DLR) is a rocket-like micro-combustor dedicated to the characterization of primary ignition phenomena of a single coaxial injector. In this test facility, combustion is initiated with a laser which provides the required synchronization accuracy for optical diagnostics. After describing the experimental setup, this paper presents the temporal evolution of the flow and the flame after the laser pulse, recorded by high-speed visualization techniques. In addition to experimental results, a numerical calculation based on the Large Eddy Simulation approach of the laser ignition is carried out. A detailed comparison of experimental and numerical data provides interesting insights on the ignition scenario.
|Document Type:||Book Section|
|Title:||Laser Ignition in a Micro Combustor|
|Journal or Publication Title:||Alternative Ignition Systems|
|In ISI Web of Science:||No|
|Page Range:||pp. 97-131|
|Keywords:||laser ignition, micro combustor, combustion|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W - no assignement|
|DLR - Research area:||Space|
|DLR - Program:||W - no assignement|
|DLR - Research theme (Project):||W -- no assignement (old)|
|Institutes and Institutions:||Institute of Space Propulsion|
|Deposited By:||Michaela Hanke|
|Deposited On:||13 Jan 2010 11:19|
|Last Modified:||13 Jan 2010 11:19|
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