Acoustic waves modeling Taylor-Couette flow in rarefied gas at inhomogeneous cylinder wall temperature distribution

Gospodinov, P.; Dankov, D.; Roussinov, V.; Mironova, Mirona

doi:10.1063/5.0101159

Cited by 2 publications

(4 citation statements)

References 17 publications

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“…It should be noted that in the cases considered in the present work, almost no development of the current along the axis of symmetry is noticed, and the results obtained for the middle section and the two end sections do not differ significantly. The comparison of the results with our previous work [22] gives grounds for the following conclusionthe pulsation of the temperature of the inner cylinder (filament) leads to a more noticeable formation of periodic structures in the flow than the mechanical oscillations of the inner cylinder.…”

Section: Numerical Resultssupporting

confidence: 67%

“…The thermoacoustic waves propagation in a rarefied gas oscillation Taylor-Couette flow between cylinders with finite length is studied on the basis of ANSYS Fluent software and DSMC model, as it should also be noted the very good coincidence of the results obtained by the two methods. The comparison of the results with our previous work [22] gives grounds for the following conclusionthe pulsation of the temperature of the inner cylinder (filament) leads to a more noticeable formation of periodic structures in the flow than the mechanical oscillations of the inner cylinder. The proposed solutions allow to estimate the application limits of various models, and to study the transition processes in some MEMS.…”

Section: Discussionsupporting

confidence: 67%

“…In our previous studies [10,12,13,14], we considered rarefied monatomic gas between two coaxial unconfined cylinders (one dimensional, axisymmetric problem) by using a statistical method -Direct Simulation Monte Carlo (DSMC) and the Navier-Stokes-Fourier equations numerical solving. The present paper is a continuation of a study of Taylor-Couette flow between cylinders of finite length [21,22] where we consider the Taylor-Couette flow (two dimensional, axisymmetric problem) in rarefied gas between two concentric stationary cylinders with final length. The state of the gas is studied over a long time period close to establishing a steady state in [21], while in [22] is studied the initial moment of occurrence and reflection of the wave from the inner cylinder, when the cylinder temperature suddenly increases.…”

Section: Introductionmentioning

confidence: 99%

“…The present paper is a continuation of a study of Taylor-Couette flow between cylinders of finite length [21,22] where we consider the Taylor-Couette flow (two dimensional, axisymmetric problem) in rarefied gas between two concentric stationary cylinders with final length. The state of the gas is studied over a long time period close to establishing a steady state in [21], while in [22] is studied the initial moment of occurrence and reflection of the wave from the inner cylinder, when the cylinder temperature suddenly increases. In this paper we study rarefied gas flow between cylinders with different temperature and stationary inner cylinder and oscillating outer cylinder.…”

Section: Introductionmentioning

confidence: 99%

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Oscillating flow of rarefied viscous gas between cylinders of finite length. Numerical study

Gospodinov,

Dankov,

Mironova

2023

J. Phys.: Conf. Ser.

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The rarefied viscous gas flow between a stationary inner and an oscillating outer cylinder is studied in this paper. It is a continuation of our previous publications where we study the flow between the infinite length cylinders while here is considered the case of finite length cylinders bounded by two planes with periodic boundary conditions in the cross sections at the ends of the cylinders. So, on the one hand, this changes the flow character creating conditions for periodic self-organization along the axis of symmetry and on the other hand, the current model is reduced to a flow in a limited volume. A continuum model based on Navier-Stokes-Fourier equations for compressible fluid with first order slip boundary conditions on the cylinders wall and statistical model Direct Simulation Monte Carlo (DSMC) method are used to model the flow. The presented numerical results were obtained after reaching sustained oscillations. Considering the model with cylinders of finite length allows to extend its capabilities and obtain a better fit to real conditions.

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Section: Numerical Resultssupporting

confidence: 67%

Section: Discussionsupporting

confidence: 67%