В 1158 томе журнала Journal of Physics: Conference Series опубликованы статьи сотрудников Института механики им. Р.Р. Мавлютова УФИЦ РАН

Опубликовано monk - пт, 04/05/2019 - 10:47

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В 1158 томе журнала Journal of Physics: Conference Series опубликованы статьи сотрудников Института механики им. Р.Р. Мавлютова УФИЦ РАН.


1. Agisheva U.O., Vdovenko I.I., Galimzyanov M.N. Acoustic waves in a superheated liquid with a gas nuclei // J. Phys.: Conf. Ser. 2019. V. 1158. 022007

Аннотация:

The propagation of weak perturbations in the superheated air-water bubbly medium is studied when in addition to water vapor bubbles contain inert gas (air, for example) does not participating in phase transitions. The effect of the initial overheating and the initial volume content of bubbles on the evolution of harmonic waves is analyzed. It is established that in the case of perturbations from the low-frequency region, an increase in the initial volumetric gas content leads to an increase in the damping coefficient, and the phase velocity decreases significantly in this case.

Ссылка, DOI: 10.1088/1742-6596/1158/2/022007


2. Agisheva U.O., Galimzyanov M.N. Evolution of pressure waves acting on a bubble liquid through adjacent boundaries // J. Phys.: Conf. Ser. 2019. V. 1158. 022008

Аннотация:

The paper presents the results on the dynamics of two-dimensional compression waves in a bubble liquid, when the effect on the system occurs through adjacent boundaries. The cases of a bell-shaped and a step-shaped impulses are considered. A comparison of the dependence of the wave evolution on the shape of the initial impulse is carried out.

Ссылка, DOI: 10.1088/1742-6596/1158/2/022008


3. Kireev V., Nizamova V., Urmancheev V. The hydraulic resistance of thermoviscous liquid flow in a plane channel with a variable cross-section // J. Phys.: Conf. Ser. 2019. V. 1158. 032014

Аннотация:

The problem of the possibility of adjusting the hydraulic resistance due to local thermal action is considered. The liquid flow with the temperature dependence of the viscosity in a plane channel with sudden contraction is investigated. The velocity profiles of the thermoviscous liquid flow and the dependence of the hydraulic resistance coefficient on various types of local action on the liquid flow with a temperature dependence of the viscosity in a plane channel are numerically obtained.

Ссылка, DOI: 10.1088/1742-6596/1158/3/032014


4. Mikhaylenko C.I. Vortex tube modelling: outlet parameter dependencies of cold air production // J. Phys.: Conf. Ser. 2019. V. 1158. 032032

Аннотация:

A model of a counterflow vortex tube has been prepared to study the dependence of the influence of the parameters of cold and hot outlets on the production of cold air. For a fixed geometry of the vortex tube, a simulation is performed with an independent change of the length of the cold outlet nozzle, the angle of the widening of the cold outlet nozzle, and the hot outlet area. In a series of experiments, the pressure of air supplied to the inlet varies in order to take into account the possible effects of computational and model errors. An anomalous increase in the temperature of the outgoing air was observed with a hot outlet area of ~30 cm2. Conclusions were drawn about the range of reasonable values of the outlet parameters for the considered configuration of the vortex tube.

Ссылка, DOI: 10.1088/1742-6596/1158/3/032032