В 1268 томе журнала Journal of Physics: Conference Series опубликованы статьи сотрудников Института механики им. Р.Р. Мавлютова УФИЦ РАН

Опубликовано monk - чт, 07/18/2019 - 10:34


В 1268 томе журнала Journal of Physics: Conference Series опубликованы статьи сотрудников Института механики им. Р.Р. Мавлютова УФИЦ РАН.

1. Rafikova G.R., Khasanov M.K. Modelling of process of displacement of methane from gas hydrate reservoir at dioxide carbon injection // J. Phys.: Conf. Ser. 2019. V. 1268. 012063


The paper presents a mathematical model for describing the process of displacing methane with carbon dioxide from a reservoir saturated with methane and its hydrate. For gas substitution kinetics, a scheme has been proposed in which the intensity of the process is defined by the diffusion of carbon dioxide through the hydrate layer formed between the gas mixture flow and methane hydrate. The numerical research of influence of main parameters on dynamics of process is conducted. Influence of coefficient of diffusion mixing of the gas mixture and permeability for the time of complete gas-replacement in reservoir is studied.

Ссылка, DOI: 10.1088/1742-6596/1268/1/012063

2. Bolotnova R.Kh., Gainullina E.F. Wave dynamics and vortex formation under the impact of a spherical impulse on the boundary between gas and aqueous foam // J. Phys.: Conf. Ser. 2019. V. 1268. 012015


The process of interaction of air shock-wave pulse and protective aqueous foam barrier in two-dimensional axisymmetric formulation using two-phase model of gas-liquid mixture including the laws of conservation of mass, momentum and energy for each phase is numerically investigated. The numerical implementation of the model is carried out using the twoPhaseEulerFoam solver of the OpenFOAM package. The results are presented in the form of spatial distributions of pressure fields, velocities and streamlines. The causes and dynamics of toroidal vortices formation in gas are investigated.

Ссылка, DOI: 10.1088/1742-6596/1268/1/012015

3. Agisheva U.O., Galimzyanov M.N., Vdovenko I.I. Acoustic properties of overheated liquid with gas nuclei during temperature increasing // J. Phys.: Conf. Ser. 2019. V. 1268. 012014


The dynamics of weak harmonic disturbances in a superheated water-air bubble medium is studied when in addition to water vapor there is an inert gas (e.g. air) that does not participate in phase transitions. The maps of the stability zones of the considered systems are analyzed depending on the value of the liquid overheating on the "volume content - bubble radius" plane with an increase in the equilibrium pressure from 0.1 to 10 MPa. The effect of the initial pressure amplitude and the overheating (from hundredths to one degree) on the dispersion of harmonic waves as well as the dependence of the increment on the bubble radius for unstable systems are investigated.

Ссылка, DOI: 10.1088/1742-6596/1268/1/012014

4. Adiullin B.R., Mikhaylenko C.I. Influence of the channel length of a vortex tube on the air temperature separation // J. Phys.: Conf. Ser. 2019. V. 1268. 012001


A model of a counterflow vortex tube has been prepared to study the dependence of the influence of the tube length parameter on the cold and hot air production. Computational experiments were made using the OpenFOAM package. The prepared grid allowed us to carry out simulations for vortex tubes with lengths of the main channel varying from 20 to 70 cm. All calculations were performed with boundary conditions with constant inlet pressure and atmospheric pressure at the outlet. Results were obtained on temperatures and mass flow rates of the air in the cold and hot outlets of the vortex tube, depending on the length of the device. It is shown that an increase of the length of the vortex tube channel increases the production of cold air. An increase in the temperature of the produced hot air on vortex tube length increase was also noted.

Ссылка, DOI: 10.1088/1742-6596/1268/1/012001