Stochastic Event-Driven Molecular Dynamics

Free-molecular gas flow through the highfrequency oscillating membrane Abstract. The possibility of using a high frequency oscillating track membranes as diffusion membranes for gas separation was studied. High frequency forced oscillation of the membrane was considered because of assumption that the membrane conductivity for a given gas can be controlled by varying the frequency and amplitude of oscillation. The problem about freemolecular gas flow through a oscillating in its plane membrane was stated and the possibility of separation of gases using such a device was investigated. Also, optimal values of membrane oscillation parameters for most efficient gas separation have been found.

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“…Problem was studied using event-driven molecular dynamics method [14]. For detailed description, please refer to [7].…”

Section: Computationsmentioning

confidence: 99%

Free-molecular gas flow through the high-frequency oscillating membrane

Kovalev

Yakunchikov

Kosiantchouk

2016

J. Phys.: Conf. Ser.

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“…Problem was studied using event-driven molecular dynamics method [11]. For detailed description, refer to [4].…”

Section: Computationsmentioning

confidence: 99%

Study of gas separation by the means of high-frequency membrane oscillations

2015

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“…Problem was studied through the method based on event-driven molecular dynamics (EDMD; Donev et al 2008). The free-molecular flow was considered; therefore, molecule trajectories were computed independently for each molecule.…”

Section: Computationsmentioning

confidence: 99%

Free-molecular gas flow through the oscillating membrane

Yakunchikov

Kovalev

Kosiantchouk

2014

Microfluid Nanofluid

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the main distinguishing features of the track membranessmall thickness and high uniformity of the pore size.In this paper, the possibility of using a high-frequency oscillating track membranes as diffusion membranes for gas separation was studied. High-frequency forced oscillation of the membrane was considered because of assumption that the membrane conductivity for a given gas can be controlled by varying the frequency and amplitude of oscillation. The problem about free-molecular gas flow through a oscillating in its plane membrane was stated, and the possibility of separation of gases using such a device was investigated. Problem statementThe gas flow through moving membrane was studied. Membrane was simulated by rigid body with straight cylindrical channels. Channels length was L (thickness of membrane), channels radius was R, and channels axis was perpendicular to the membrane surface (see Fig. 1). Membrane was placed between two tanks (1) and (2) with constant pressures P 1 , P 2 and temperatures T 1 , T 2 (T 1 = T 2 = T w , where T w -temperature of membrane material).Main assumptions:1. Gas flow inside channel is free-molecular. 2. Velocity distribution for molecules entering from tanks is equilibrium corresponding to tank temperature. 3. All membrane channels are equal-cylinders with length L and radius R. 4. Membrane moves as absolutely rigid body. Law of membrane motion: x = x 0 , y = y 0 + A sin (ωt + φ), z = z 0 . 5. Channel wall temperature T w is maintained constant. AbstractThe free-molecular gas flow through the membrane oscillating in its own plane was studied. Passing probability and velocity distribution function of gas molecules in the membrane were calculated depending on the dimensionless parameters characterizing the geometry of membrane channels, gas molecule mass, gas temperature, frequency and amplitude of the membrane oscillation. It has shown that the conductivity of the membrane for a given gas can be controlled by changing the parameters of forced oscillations.

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Stochastic Event-Driven Molecular Dynamics

Cited by 43 publications

References 57 publications

Free-molecular gas flow through the high-frequency oscillating membrane

Free-molecular gas flow through the high-frequency oscillating membrane

Study of gas separation by the means of high-frequency membrane oscillations

Free-molecular gas flow through the oscillating membrane

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