This presentation is devoted to studying the nitrogen plasma wake beneath a row of two or three parallel cylinders at glow electrical discharge as commonly applied in the electric-discharge CO
2-lasers. In this case, the basic governing parameters are the Reynolds number, the row non-dimensional pitch and the current density. Depending on the values of these parameters, from one to three maxima in the velocity spectra of the wake have been observed. The simplest way of identification of these global modes was used, namely, the employment of one-dimensional flow model developed (in the form of coupled van-der-Pole oscillators). In addition to the mode identification, the values of two parameters of this flow model have been found from the disposition of the velocity spectral peaks. Within the framework of this analysis the two-dimensional model of such wake flows (the model of interacting Karman streets in non-viscid fluid) is developed, as well as the one-dimensional model mentioned above.
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