Reconstruction of the attractor of the turbulent structure of model gas flows in process pipelinesстатья
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Дата последнего поиска статьи во внешних источниках: 18 февраля 2018 г.
Аннотация:An analysis of the turbulence of two-dimensional gas flows based on methods used for the reconstruction of attractors of a dynamic system and estimates of the fractal dimensionality from a time series of gas flows has been carried out. Estimates of the fractal dimensionality and reconstruction of attractors have been obtained from a time series of a transverse component of the flow velocity. In doing so, methods of reconstruction by means of Takens' vectors have been used. On the basis of computer-aided experiments, it was found that during the propagation of a shock wave through the confuser of the pipeline in the phase portrait, three types of periodic motions of the gas flow, as well as a special feature that plays a considerable role in change of pulsation modes, have been observed. There has also been revealed a region of dynamic chaos to which the phase paths originating from various initial points are attracted.