RESEARCH OF FIRMNESS OF CONVECTIV MOTION WITH PARNIM TYPE OF SPEED

Authors

  • Василь Васильович Негрич Ivano-Frankivs’k National Technical University of Oil and Gas
  • Ярослав Михайлович Дем'янчук Ivano-Frankivs’k National Technical University of Oil and Gas
  • Галина Ярославівна Процюк Ivano-Frankivs’k National Technical University of Oil and Gas

Keywords:

convective fluid motion, the local potential, dissipative structures, criteria Grashof , Prandtl number.

Abstract

We investigate the hydrodynamic stability of viscous incompressible fluid located between vertical parallel surfaces . Considered free convection with an even velocity profiles . For research use variational principle of non-equilibrium thermodynamics – the method of local potential. Determine the critical Grashof criterion , depending on the Prandtl number and value of the wave number at which the transition from simple to complex dissipative structures. Also take into account the angle of the layer with respect to the gravitational field. The method of calculation using only one test feature provides comparable results with the kinetic method , using complex test functions.

References

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Published

2019-03-05

How to Cite

Негрич, В. В., Дем’янчук, Я. М., & Процюк, Г. Я. (2019). RESEARCH OF FIRMNESS OF CONVECTIV MOTION WITH PARNIM TYPE OF SPEED. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, (1(21), 98–111. Retrieved from https://pvntsh.nung.edu.ua/index.php/number/article/view/186

Issue

Section

Mathematics and Mechanics

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