甩油盘雾化实验台开发和验证

Fuel slingers are commonly used fuel injection devices for small and medium-sized aeroengines. This study developed a fuel slinger atomization test bench to provide reference data to improve fuel slinger designs and combustion chamber performance tests. The test bench included a water supply system, rotating system, ventilation system, test system, control system, and data acquisition system. Analyses of the key operating parameters such as the water supply pressure, water supply flow rate and vibrations of the rotating system shows that the test bench gives reliable, accurate experimental data. A phase Doppler particle analyzer (PDPA) was used to measure the particle size statistics and the variation of the Sauter mean diameter (SMD) for various rotational speeds. The experimental results show that the particle size in the fuel slinger has a normal distribution and the SMD decreases with increasing fuel slinger speed with an SMD of 41 μm above 12 000 r/min. The experimental results are consistent with the conclusions of previous papers, further indicating the reliability of the test bench.