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Although exhaust gas recirculation (EGR) is widely implemented to suppress the NOx, it can increase soot emissions and decrease the thermal efficiency in internal combustion engines. Water-emulsified diesel is a promising alternative approach, as it decreases soot emissions, suppresses NOx formation, and promotes thermal efficiency through improved mixing between the fuel and air. Based on the inhibiting...
Using nonlinear theory as guidance, the expected (both reported and unreported) nonlinear response modes of a laminar diffusion flame to external acoustic excitation are investigated at different frequencies (6–100Hz). The flame oscillating frequency is analyzed using digital signal and image processing techniques, while the hot gas dynamics are visualized by a high speed schlieren imaging system...
The experimental investigation of the dynamic flame flickering properties of acoustically excited combustion process has been conducted. In particular, the variations of flame oscillation frequency response in diffusion-like sooty and premixed-like chemiluminescence flame colour entities under external acoustic perturbation were extracted, analysed, and compared using digital colour image processing...
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