Using the resonance phenomenon for a high efficiency of a pulse-operating ejector
A.V. Voevodin, A.S. Petrov, G.G. Soudakov
Zhukovsky Central Aerohydrodynamic Institute, Zhukovsky,Russia
Keywords: ejector, resonance, computation, experiment
Abstract
The paper presents the results of computational and experimental study for parameters of the innovative pulse-mode ejector used as a flow control device for flight vehicles. The ejector comprises a Helmholtz resonator adjusted to a certain resonant frequency. The computational and experimental results revealed the existence of resonant modes in ejector operation providing a higher efficiency. Simulation for internal aerodynamics for the pulse-mode ejector can explain a high efficiency calculated by the high-pressure gas flow rate, as well as advantages/shortcomings in other metrics (compared to the steady operation mode). The margins of efficient operation of this resonance-operating ejector in the metrics of gas flow rate are calculated. The perspectives for using the ejector as a flow control devices are discussed.
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