Numerical simulations of a lobed fuel injector

摘要: Numerical modeling of the nonreactive mixing processes associated with a lobed fuel injector in coflowing air stream is presented. The device which generates strong streamwise vorticity, producing locally high strain rates can enhance molecular reactants while delaying ignition controlled manner. Vortex element used to simulate flow field evolution and characteristics for this injector. Quantitative predictions vorticity generation qualitative results rollup compare well qualitatively recent experimental investigations [Smith et al., Phys. Fluids 9, 667 (1997)]. Parametric studies effects lobe amplitude-to-wavelength ratio, angle, shape given conditions suggest that geometrical features may be optimized control reaction processes.