Abstract
Three-dimensional direct numerical simulations are performed of turbulent combustion of initially spherical flame kernels. The chemistry is described by a progress variable which is attached to a flamelet library. In order to progress towards turbulent closure of such a system the validity of the flamelet approach must be studied. Then the turbulent closure of the equation for the progress variable should be investigated. The influence of flame stretch and curvature on the local mass burning rate is studied and compared to an analytical model. Then first investigations of the relative importance of the unresolved turbulent flux compared to the source term of the progress variable are presented.
| Original language | English |
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| Title of host publication | Proceedings of the European Combustion Meeting : Louvain-la-Neuve, Belgium, April 3 - 6, 2005 |
| Editors | V. Dias |
| Place of Publication | Louvain-la-Neuve |
| Publisher | Combustion Institute, Belgian Section |
| Pages | Paper-134 |
| Publication status | Published - 2005 |