TY  - EJOU
AU  - Chen, Hailong 
AU  - Tao, Guanzhen 
AU  - Wei, Daijun 
AU  - Ouyang, Guangyao 

TI  - Influence of Aviation Kerosene-Diesel Blending Ratios on Ignition Behavior and Spray Dynamics
T2  - Fluid Dynamics \& Materials Processing

PY  - 2025
VL  - 21
IS  - 10
SN  - 1555-2578

AB  - Modifications in fuel spray characteristics fundamentally influence fuel–air mixing dynamics in diesel engines, thereby significantly affecting combustion performance and emission profiles. This study explores the operational behavior of RP-5 aviation kerosene/diesel blended fuels in marine diesel engines. A spray visualization platform based on Mie scattering technology was developed to comparatively analyze the spray characteristics, ignition behavior, and soot emissions of RP-5 aviation kerosene, conventional-35# diesel, and their blends at varying mixing ratios (D100H0, D90H10, D70H30, D50H50, D30H70, D0H100). The findings demonstrate that, under constant injection pressure, aviation kerosene combustion results in a more uniform temperature field, characterized by lower core flame temperatures, broader high-temperature regions, and reduced soot concentrations with spatially homogeneous distribution and no pronounced peaks. In terms of spray dynamics, increasing the proportion of aviation kerosene leads to a marked widening of the spray cone angle. Meanwhile, spray penetration length exhibits a non-monotonic trend—initially decreasing and subsequently increasing—as the kerosene blending ratio rises.
KW  - Diesel/Aviation kerosene; ignition; soot; spray

DO  - 10.32604/fdmp.2025.069569