LES/FMDF of Turbulent Combustion in Complex Flow Systems

TitleLES/FMDF of Turbulent Combustion in Complex Flow Systems
Publication TypeConference Paper
Year of Publication2007
AuthorsAfshari, A, Jaberi, FA, Shih, TI-P
Conference Name45th AIAA Aerospace Sciences Meeting and Exhibit
Date Published01/2007
Conference LocationReno, Nevada

A high-order Lagrangian/Eulerian method based on the the filtered mass density func- tion (FMDF) for subgrid-scale (SGS) combustion closure was developed to perform large eddy simulation (LES) of turbulent reacting flows in complex geometrical configurations in multi-block structured grids. In particular, an efficient algorithm has been developed to search and locate particles in multi-block, hexahedral-structured grid system. Also, the consistency, convergence, and accuracy of the FMDF and the Monte Carlo solution of its equivalent stochastic differential equations were assessed. The consistency between Eulerian and Lagrangian fields were established for a reacting flow in a dump combustor. The results obtained for a reacting flow in an axisymmetric, premixed dump-combustor, were found to compare favorably with measured experimental data.