Abstract
In order to overcome the limitation of fuel supply to the nozzle of an aero-engine, a nozzle with two main and secondary fuel paths and accompanied by air-assisted atomization can be used to solve this kind of problem. The two fuel paths make the fuel centrifugal and direct injection respectively, which can achieve the purpose of combining the advantages of centrifugal and direct injection nozzles, thus realizing a wide working range of fuel flow. The results show that when the fuel pressure reach a certain range, the main and secondary fuel lines start to work simultaneously, the atomization cone angle and fuel flow rate increase with the increase of pressure, and when the pressure reaches a certain value, continuing to increase the fuel pressure has little effect on the atomization angle. For the case of air supply and simultaneous operation of the main and secondary fuel lines, with the increase of fuel pressure, the atomization particle size changes gradually and evenly and has a tendency to increase, which is in line with the expected goal.
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