Abstract
The gas flow in the Hartmann resonance tube is numerically investigated by the finite volume method based on the Roe solver. The oscillation of the flow is studied with the presence of a needle actuator set along the nozzle axis. Numerical results agree well with the theoretical and experimental results available. Numerical results indicate that the resonance mode of the resonance tube will switch by means of removing or adding the actuator. The gas flow in the ultrasonic gas atomization (USGA) nozzle is also studied by the same numerical methods. Oscillation caused by the Hartmann resonance tube structure, coupled with a secondary resonator, in the USGA nozzle is investigated. Effects of the variation of parameters on the oscillation are studied. The mechanism of the transition of subsonic flow to supersonic flow in the USGA nozzle is also discussed based on numerical results.
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Li, B., Hu, Gh. & Zhou, Zw. Numerical simulation of flow in Hartmann resonance tube and flow in ultrasonic gas atomizer. Appl. Math. Mech.-Engl. Ed. 28, 1415–1426 (2007). https://doi.org/10.1007/s10483-007-1101-6
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DOI: https://doi.org/10.1007/s10483-007-1101-6