Physics – Fluid Dynamics
Scientific paper
2002-03-13
Physics
Fluid Dynamics
4 pages, 4 figures; to appear in Proceedings ETC9, Eds: I.P. Castro and P.E. Hancock, CIMNE, Barcelona, 2002
Scientific paper
Nonpremixed turbulent reacting flows are intrinsically difficult to model due to the strong coupling between turbulent motions and reaction. The large amount of heat released by a typical hydrocarbon flame leads to significant modifications of the thermodynamic variables and the molecular transport coefficients and thus alters the fluid dynamics. Additionally, in nonpremixed combustion, the flame has a complex spatial structure. Localized expansions and contractions occur, enhancing the dilatational motions. Therefore, the compressibility of the flow and the heat release are intimately related. However, fundamental studies of the role of compressibility on the scalar mixing and reaction are scarce. In this paper we present results concerning the fundamental aspects of the interaction between non-premixed flame and compressible turbulence.
Livescu Daniel
Madnia Cyrus K.
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