Advanced nonstationary convective flow in vertical fluid layer

Authors

  • Алексей Викторович Зюзгин (Alexey Zyuzgin) Perm State University
  • Дмитрий Анатольевич Брацун (Dmitry Bratsun) Perm National Research Polytechnic University

DOI:

https://doi.org/10.17072/1994-3598-2016-2-49-55

Abstract

We investigate the nonstationary supercritical regimes of convection in the vertical layer of a non–uniformly heated fluid. It is known that such a problem is very demanding to a height of layer. The height of the cavity should be sufficient for the development of the flow up to the state of the interaction of heat waves in the counter streams. In this way one can fit to a popular approach of “infinite” layer. In this experiment, the relative height of the convective cavity is almost seven times higher than the minimum value required to start the interaction. The obtained results confirm both quantitatively and qualitatively the results of previous work of the authors that contain the three-dimensional numerical simulation and experiments with a layer of a minimum required length. We demonstrate that in the ultra-long fluid layer one can observe simultaneously all the non-stationary modes developing along the layer at significant supercriticalities. In addition, we report a new regime of convection, previously not observed, which is chaotic and three-dimensional.Received 27.07.2016; accepted 26.08.2016

Author Biographies

Алексей Викторович Зюзгин (Alexey Zyuzgin), Perm State University

кафедра общей физики, профессор

Дмитрий Анатольевич Брацун (Dmitry Bratsun), Perm National Research Polytechnic University

кафедра Прикладная физика, заведующий кафедрой

References

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Published

2017-03-04

How to Cite

Зюзгин (Alexey Zyuzgin) А. В., & Брацун (Dmitry Bratsun) Д. А. (2017). Advanced nonstationary convective flow in vertical fluid layer. Bulletin of Perm University. Physics, (2(33). https://doi.org/10.17072/1994-3598-2016-2-49-55

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Section

Regular articles

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