Abstract
Data of experiments on determining the region of existence for auto‐oscillations (Hartmann effect) with a frequency of approximately 450 Hz with variation in the distance from the nozzle to the resonator. Results of these experiments differ from the well‐known results of Hartmann and his followers obtained for shallow resonators. It is shown that the region of auto‐oscillations exists for large distances between the nozzle and the resonator. The results obtained are explained using the modern knowledge of the gas‐dynamic structure of a supersonic underexpanded jet. It is shown that in determining the frequency of low‐frequency oscillations, it suffices to allow for the resonator length and its “added” mass.
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Glaznev, V.N., Korobeinikov, Y.G. Hartmann Effect. Region of Existence and Oscillation Frequencies. Journal of Applied Mechanics and Technical Physics 42, 616–620 (2001). https://doi.org/10.1023/A:1019247529314
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DOI: https://doi.org/10.1023/A:1019247529314