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Simulation of Premixed Turbulent Combustion in a Gas Engine using the Immersed Boundary Method and a Level Set Flame Model |
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| Authors: | Christian Bruzzese Andreas Class Ingmar Bruder Yvan Bronner |
| Institution: | 1. Karlsruhe Institute of Technology, AREVA Nuclear Professional School / Institute for Nuclear and Energy Technolgies, Post Box 3640, 76021 Karlsruhe/Germany;2. Karlsruhe Institute of Technology, AREVA Nuclear Professional School / Institute for Nuclear and Energy Technolgies, Post Box 3640, 76021 Karlsruhe/Germany
Christian Bruzzese, phone +49 721 608 22047, fax +49 721 608 24837 Ingmar Bruder, Student at Ansbach University of Applied Sciences, Germany;3. MTU Friedrichshafen GmbH, Maybachplatz 1, 88045 Friedrichshafen/Germany |
| Abstract: | An efficient simulation approach for turbulent flame brush propagation is a level set formulation closed by the turbulent flame speed. A formulation of the level set equation with the corresponding treatment of the turbulent mass burning rate that is compatible with standard Finite Volume discretization schemes available in computational fluid dynamics codes is employed. In order to simplify and to speed up the meshing process in complicated geometries (here in gas engines) the immersed boundary method in a continuous formulation, where the forces replacing the boundaries are introduced in the momentum conservation equations before discretization, is employed. In our contribution, aspects of the numerical implementation of the level set flame model combined with the immersed boundary formulation in OpenFOAM are presented. First representative simulation results of a homogeneous methane/air mixture combustion in a simplified engine geometry are shown. (© 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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