Three dimensional Monte Carlo simulations of plume impingement

Kannenberg, Keith; Boyd, Iain D.

doi:10.2514/6.1998-2755

Cited by 6 publications

(7 citation statements)

References 7 publications

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“…Similar to previous work 20, 21 the present code is validated through comparison with experimental data for a three-dimensional nitrogen plume impingement. The schematic of this problem is given in Fig.…”

Section: Dsmc Methods and Its Applicationsupporting

confidence: 53%

“…Figure 3 reveals three comparisons for surface pressure, shear stress, and heat flux distributions along the wall and shows strong a similarity between the present DSMC results, the experiments, and previously reported DSMC results. 21 Although not shown here, comparisons were also made for β = 0 and 90 deg, and the results were also found to be comparably accurate. …”

Section: Dsmc Methods and Its Applicationmentioning

confidence: 99%

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Direct Simulation Monte Carlo Analysis of Thruster Plumes/Satellite Base Region Interaction

2004

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The interaction of thruster plumes with satellite components is investigated, with emphasis on undesirable effects, such as disturbance force/torque, thermal loading, and species deposition in the Korea Multipurpose Satellite-II (KOMPSAT-II) base region. The actual configuration of the satellite is simplified by the consideration of four major components of hydrazine thrusters, the S-band antenna, and the surrounding ring. For the numerical simulation, a fully unstructured three-dimensional discrete simulation Monte Carlo (DSMC) code is developed and validated. The DSMC computation allows for examination of the detailed flowfield dynamics, as well as the wall conditions, which, otherwise, would not be possible from a simplified engineering analysis. The computations show that the present thruster arrangement used in KOMPSAT-II incurs a negligible disturbance force/torque and thermal loading compared with its nominal thrust/torque and solar heating. The simulations also indicate that the species deposition is insignificant due to the high surface temperature of the satellite body. Of the chemical species considered (H 2 , N 2 , and NH 3 ), more H 2 molecules collide with the S-band antenna cone. This study clearly shows the usefulness of DSMC calculations for analysis of plume effects in the development phase of a satellite. Nomenclature

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Section: Dsmc Methods and Its Applicationsupporting

confidence: 53%

Section: Dsmc Methods and Its Applicationmentioning

confidence: 99%

Direct Simulation Monte Carlo Analysis of Thruster Plumes/Satellite Base Region Interaction

2004

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“…2 Senior Scientist, Planetary Science Institute, betty@psi.edu. 3 Professor, Dept. of Aerospace Eng.…”

Section: A Bmentioning

confidence: 99%

Parallel 3D Hybrid Continuum/DSMC Method for Unsteady Expansions Into a Vacuum

Stewart

Pierazzo

Goldstein³

et al. 2009

47th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

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We present the application of a unidirectional unsteady coupling between a continuum solver and a three dimensional parallel Direct Simulation Monte Carlo (DSMC) code. Two different problems have been considered: the spherically symmetric expansion of a water vapor cloud into a vacuum and the late stages of a comet impact on the Moon. In both cases, unsteady data pre-computed from a continuum solution are used as input to the DSMC code at a fixed interface. The DSMC results were then compared to the continuum results downstream of the interface in a region of mutual validity in order to validate our approach. The DSMC results for the expansion flow showed good agreement with the analytic solution for the density, velocity and temperature downstream of the interface. Similarly, for the comet impact simulations, the DSMC density agrees well with the solution from the continuum solver, the SOVA hydrocode. A slightly hotter solution is however obtained downstream of the interface using the DSMC code compared to the hydrocode solution.

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“…For example, the bi-annual international rarefied gas-dynamics symposiums usually collect papers on gaseous jet impingement [22,28,29] and molecular beams, and the NASA Johnson center developed the versatile DSMC Analysis Code (DAC) package to simulate plume impingement [30,31] on spacecraft surfaces. Kannenberg and Boyd [32] used the cosine law/Simons model [25] and particle simulation method to compute the density of a plume impinging on a flat plate. Vashchenov et al [33] and his colleagues performed particle simulations of plume flows from a nozzle.…”

Section: Background and Gaskinetic Methods To Investigate Plume And Imentioning

confidence: 99%

Gaskinetic Modeling on Dilute Gaseous Plume Impingement Flows

Cai¹

2016

Aerospace

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This paper briefly reviews recent work on gaseous plume impingement flows. As the major part of this paper, also included are new comprehensive studies on high-speed, collisionless, gaseous, circular jet impinging on a three-dimensional, inclined, diffuse or specular flat plate. Gaskinetic theories are adopted to study the problems, and several crucial geometry-location and velocity-direction relations are used. The final complete results include impingement surface properties such as pressure, shear stress, and heat flux. From these surface properties, averaged coefficients of pressure, friction, heat flux, moment over the entire flat plate, and the distance from the moment center to the flat plate center are obtained. The final results include accurate integrations involving the geometry and specific speed ratios, inclination angle, and the temperature ratio. Several numerical simulations with the direct simulation Monte Carlo method validate these analytical results, and the results are essentially identical. The gaskinetic method and processes are heuristic and can be used to investigate other external high Knudsen (Kn) number impingement flow problems, including the flow field and surface properties for a high Knudsen number jet from an exit and flat plate of arbitrary shapes. The results are expected to find many engineering applications, especially in aerospace and space engineering.

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Three dimensional Monte Carlo simulations of plume impingement

Cited by 6 publications

References 7 publications

Direct Simulation Monte Carlo Analysis of Thruster Plumes/Satellite Base Region Interaction

Direct Simulation Monte Carlo Analysis of Thruster Plumes/Satellite Base Region Interaction

Parallel 3D Hybrid Continuum/DSMC Method for Unsteady Expansions Into a Vacuum

Gaskinetic Modeling on Dilute Gaseous Plume Impingement Flows

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