This paper describes experimental studies of thermally driven acoustic oscillations of a gas column (“Taconis vibration”) generated in a pipe whose end is closed at the warm part and open at the cold part. The stability curves and the frequency diagrams of the oscillations are experimentally determined under a given temperature distribution for the ratio of warm length of pipe to cold length as a parameter. The existence of two branches as predicted by Rott's theory is confirmed. A finite boundary layer thickness plays an important role in exciting and characterizing this type of instability.
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Yazaki, T., Tominaga, A. & Narahara, Y. Experiments on thermally driven acoustic oscillations of gaseous helium. J Low Temp Phys 41, 45–60 (1980). https://doi.org/10.1007/BF00117229
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DOI: https://doi.org/10.1007/BF00117229