Error analysis of large-eddy simulation of the turbulent non-premixed sydney bluff-body flame

Kempf, A.M. and Geurts, B.J. and Oefelein, J.C. (2011) Error analysis of large-eddy simulation of the turbulent non-premixed sydney bluff-body flame. Combustion and Flame, 158 (12). pp. 2408-2419. ISSN 0010-2180

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Abstract:	A computational error analysis is applied to the large-eddy simulation of the turbulent non-premixed Sydney bluff-body flame, where the error is defined with respect to experimental data. The errorlandscape approach is extended to heterogeneous compressible turbulence, which is coupled to combustion as described by a flamelet model. The Smagorinsky model formulation is used to model the unknown turbulent stresses. We introduce several measures to quantify the total simulation error and observe a striking ‘valley-structure’ in the error that arises as function of the spatial resolution and the Smagorinsky length parameter. The optimal refinement strategy that can be extracted from this error-landscape is reminiscent of that for non-reacting turbulent flow.
Item Type:	Article
Copyright:	© 2011 Elsevier
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Mathematics of Computational Science (MaCS)
Link to this item:	http://purl.utwente.nl/publications/79659
Official URL:	http://dx.doi.org/10.1016/j.combustflame.2011.04.012
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