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Bashkin, V. A.; Егоров, И. В.; Egorova, M. V.; Иванов, Д. В.

doi:10.1023/a:1018840029088

Cited by 8 publications

(2 citation statements)

References 5 publications

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“…This approach was developed for numerical integration of unsteady-state two-dimensional Navier-Stokes equations [11] and Reynolds equations [12] in the Boussinesq assumption of Reynolds stresses using a two-parameter differential model of turbulence [13] and realized in a software package for personal computers (PC). It was further used to solve a number of supersonic problems of external and internal aerodynamics such as those for circular cylinder, sphere, and plane and axisymmetric channels [14].…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Heating of a Thin Sharp-Nose Circular Cone in Supersonic Flow

2005

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The assumption of flow symmetry is made to investigate a supersonic flow (M ∞ = 5) past a thin circular cone with a half-angle θ c = 4° and an isothermal surface (T w0 = 0.5) by way of numerical integration of unsteady-state three-dimensional Navier-Stokes and Reynolds equations. The calculations are performed in a discrete range of variation of the Reynolds number (10 4 ≤ Re ≤ 10 8 ) and angle of attack (0° ≤ α ≤ 15°). The effect of the determining parameters of the problem on the structure of flow field and on aerodynamic heating of the body surface subjected to flow is demonstrated.

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Section: Introductionmentioning

confidence: 99%

Aerodynamic Heating of a Thin Sharp-Nose Circular Cone in Supersonic Flow

2005

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“…Last years the development of numerical methods on the one hand and permanent extension of computational possibilities on the other has opened ways to solution of complicated problems in this field. The flow round cylinder was studied on the base of Navier-Stokes [3,4] and Reynolds equations [5]. In [6] the approbation of potential in the model of variable soft sphere for nitrogen was performed by comparison of results of the direct simulation Monte Carlo (DSMC) method [7] with experiment.…”

Section: Introductionmentioning

confidence: 99%

Direct Monte Carlo Simulation of the Transverse Supersonic Rarefied Gas Flow past a Cylinder

Plotnikov¹,

Ребров²

2005

AIP Conference Proceedings

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Effect of the accommodation coefficient on transfer processes in a supersonic rarefied gas flow around a transversely aligned cylinder

Plotnikov

2008

J Appl Mech Tech Phys

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A supersonic flow around a cylinder is studied by the direct statistical Monte Carlo method in a wide range of rarefaction: from regimes close to continuum to free-molecular flow. The effect of the accommodation coefficient on the flow near the cylinder and on heat transfer between the gas and the cylinder is examined.The study of a supersonic rarefied gas flow around a cylinder has attracted attention of researchers since the 1950s [1,2]. The possibilities of the numerical solution of this problem have been recently enhanced by the development of numerical methods of gas dynamics on one hand and by the evolution of computational engineering on the other hand. The flow around a cylinder was numerically studied by solving the Navier-Stokes equations in [3,4]. The variable soft sphere (VSS) model was tested in [5] in the case of direct statistical Monte Carlo (DSMC) simulations [6] of a nitrogen flow around a cylinder. The influence of internal degrees of freedom of molecules on the flow field and on heat transfer in a hypersonic rarefied gas flow around a cylinder was considered in [7]. The specific features of a flow of a binary mixture of gases around a cylinder was studied in [8] by the DSMC method.The present paper is a continuation of [9] where the technique of determining the accommodation coefficient in a supersonic free-molecular flow around a thin-wire probe [10,11] was numerically justified. The technique is based on studying heat fluxes in a free-molecular flow around the wire; hence, a question arises on choosing flow regimes with heat transfer between the gas and the cylinder close to heat transfer in the free-molecular regime. The effect of the degree of flow rarefaction on the flow structure and on heat transfer was evaluated in [9].The main objective of the present work was the study of a supersonic rarefied gas flow around a transversely aligned cylinder of infinite length, aimed at estimating the influence of the accommodation coefficient on the flow structure and on heat transfer. An additional recent impetus for such a research was the development of the gas-dynamic method of thin-film deposition in vacuum [12][13][14] and the associated necessity of a detailed study of essentially nonequilibrium regions near the coated surfaces of different configurations. Formulation of the Problem and Solution by the DSMC Method.We used a rectangular coordinate system (X, Y, Z), where the X axis was directed downstream and the Y and Z axes were perpendicular to the flow (the Z axis coincided with the cylinder centerline).We considered a steady plane-parallel supersonic flow of a monatomic gas around an infinite cylinder of diameter d. The plane source was located in the cross section x = x s < 0. The gas was completely absorbed at a certain distance x = x e further downstream. As the problem is symmetric, we used the following conditions: the plane y = 0 was assumed to be specular, and the free-stream boundary conditions were set in the plane y = y e . If a particle returned to the plane of the source, it wa...

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Untitled

Cited by 8 publications

References 5 publications

Aerodynamic Heating of a Thin Sharp-Nose Circular Cone in Supersonic Flow

Aerodynamic Heating of a Thin Sharp-Nose Circular Cone in Supersonic Flow

Direct Monte Carlo Simulation of the Transverse Supersonic Rarefied Gas Flow past a Cylinder

Effect of the accommodation coefficient on transfer processes in a supersonic rarefied gas flow around a transversely aligned cylinder

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