Abstract
The stability of periodic motion of a fluid in a planar channel was investigated experimentally. Two mechanisms of departure from stability of rectilinear motion — at high and low frequencies, respectively — were observed. The critical Reynolds number was found as a function of the pulsation frequency. The results of the quasistationary theoretical approach to the stability of periodic flows [1] agree with the experiment.
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Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 6, pp. 114–118, November–December, 1979.
I thank G. F. Shaidurov, under whose guidance this work was carried out.
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Kozlov, V.G. Stability of periodic motion of fluid in a planar channel. Fluid Dyn 14, 904–908 (1979). https://doi.org/10.1007/BF01051995
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DOI: https://doi.org/10.1007/BF01051995