Thermal analysis for Orbiter and ISS plume impingement on International Space Station

Rochelle, W. C.; Reid, Ethan A.; Carl, Terry L.; Smith, Ries N.; Lumpkin, Forrest E.

doi:10.2514/6.2001-2813

Cited by 9 publications

(7 citation statements)

References 2 publications

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“…(8)], the number of cluster growth events per time step can be obtained for a cell. For each cluster growth event, a gas monomer is deleted from the computational domain, and added to a set of randomly chosen 1/W c number of clusters, so that the size of each of the chosen clusters increases by 1.…”

Section: B New Weighting Scheme In the Bgk Framework For Condensing mentioning

confidence: 99%

“…13 In the field of aerospace engineering, condensation has always been an important area of study, particularly with respect to understanding the effects of condensation on the rarefied flow surrounding a spacecraft from the perspective of abnormal surface heating and contamination. In this regard, Rochelle et al 8 studied the effects of condensing plume impingement on the International Space Station components causing unbalanced surface pressure distributions, heating, and contamination. These phenomena can jeopardize the purpose of functional spacecraft surfaces, and in turn reduce the active lifespan of important space missions, 14 and hence are of current interest.…”

Section: Introductionmentioning

confidence: 99%

“…In the last few decades, the problems of homogeneous nucleation have received renewed interest in the scientific community because of their applications in a number of fields such as metallurgy, 2, 3 meteorology, 4, 5 chemistry, 6,7 and aerospace engineering. 8,9 In recent years, the scope of condensation has even broadened to many other areas of studies such as plasma generation, biomedical research, nanofabrication, and cryogenics. Interaction of intense laser pulses with clusters generated in expanding flows has been found to be an efficient way to generate hot plasmas by using the large surface-to-volume ratios of clusters.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of homogeneous condensation of small polyatomic systems in high pressure supersonic nozzle flows using Bhatnagar–Gross–Krook model

Kumar

Levin

2011

The Journal of Chemical Physics

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In the present work, we have simulated the homogeneous condensation of carbon dioxide and ethanol using the Bhatnagar-Gross-Krook based approach. In an earlier work of Gallagher-Rogers et al. [J. Thermophys. Heat Transfer 22, 695 (2008)], it was found that it was not possible to simulate condensation experiments of Wegener et al. [Phys. Fluids 15, 1869 (1972)] using the direct simulation Monte Carlo method. Therefore, in this work, we have used the statistical Bhatnagar-Gross-Krook approach, which was found to be numerically more efficient than direct simulation Monte Carlo method in our previous studies [Kumar et al., AIAA J. 48, 1531 (2010)], to model homogeneous condensation of two small polyatomic systems, carbon dioxide and ethanol. A new weighting scheme is developed in the Bhatnagar-Gross-Krook framework to reduce the computational load associated with the study of homogeneous condensation flows. The solutions obtained by the use of the new scheme are compared with those obtained by the baseline Bhatnagar-Gross-Krook condensation model (without the species weighting scheme) for the condensing flow of carbon dioxide in the stagnation pressure range of 1-5 bars. Use of the new weighting scheme in the present work makes the simulation of homogeneous condensation of ethanol possible. We obtain good agreement between our simulated predictions for homogeneous condensation of ethanol and experiments in terms of the point of condensation onset and the distribution of mass fraction of ethanol condensed along the nozzle centerline.

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Section: B New Weighting Scheme In the Bgk Framework For Condensing mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simulation of homogeneous condensation of small polyatomic systems in high pressure supersonic nozzle flows using Bhatnagar–Gross–Krook model

Kumar

Levin

2011

The Journal of Chemical Physics

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“…For example, the effects of condensation on the rarefied flow surrounding spacecraft and the plume radiation signature of supersonic expansions to vacuum are an active area of research. Rochelle et al 5 studied the effects of clusters in the plume due to its impingement on the International Space Station components and found that they caused abnormal heating, unbalanced surface pressure distributions, and contamination. These phenomena can adversely affect the life span of important spacecraft components and are therefore important to understand.…”

Section: Introductionmentioning

confidence: 99%

Modeling of carbon dioxide condensation in the high pressure flows using the statistical BGK approach

Kumar

Levin

2011

Physics of Fluids

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In this work, we propose a new heat accommodation model to simulate freely expanding homogeneous condensation flows of gaseous carbon dioxide using a new approach, the statistical Bhatnagar-Gross-Krook method. The motivation for the present work comes from the earlier work of Li et al. [J. Phys. Chem. 114, 5276 (2010)] in which condensation models were proposed and used in the direct simulation Monte Carlo method to simulate the flow of carbon dioxide from supersonic expansions of small nozzles into near-vacuum conditions. Simulations conducted for stagnation pressures of one and three bar were compared with the measurements of gas and cluster number densities, cluster size, and carbon dioxide rotational temperature obtained by Ramos et al. [Phys. Rev. A 72, 3204 (2005)]. Due to the high computational cost of direct simulation Monte Carlo method, comparison between simulations and data could only be performed for these stagnation pressures, with good agreement obtained beyond the condensation onset point, in the farfield. As the stagnation pressure increases, the degree of condensation also increases; therefore, to improve the modeling of condensation onset, one must be able to simulate higher stagnation pressures. In simulations of an expanding flow of argon through a nozzle, Kumar et al. [AIAA J. 48, 1531 (2010)] found that the statistical Bhatnagar-Gross-Krook method provides the same accuracy as direct simulation Monte Carlo method, but, at one half of the computational cost. In this work, the statistical Bhatnagar-Gross-Krook method was modified to account for internal degrees of freedom for multi-species polyatomic gases. With the computational approach in hand, we developed and tested a new heat accommodation model for a polyatomic system to properly account for the heat release of condensation. We then developed condensation models in the framework of the statistical Bhatnagar-Gross-Krook method. Simulations were found to agree well with the experiment for all stagnation pressure cases (1-5 bar), validating the accuracy of the Bhatnagar-Gross-Krook based condensation model in capturing the physics of condensation.

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“…It is interestingtounderstand theeffectsofcondensationonthe rarefiedflow surrounding spacecrafta nd thep lume radiations ignature of supersonice xpansions to vacuum. Rochelle et al [3] studied theeffectsofcluster particlesinthe plume on its impingement on theInternationalSpace Station components andfound that they causedabnormalheating, unbalanced surface pressure distributions,and moreovercontamination. Thesephenomena can adverselyaffect thelifespanofimportantspacecraftcomponents.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Homogeneous Condensation of Ethanol in High Pressure Supersonic Nozzle Flows using BGK Condensation Model

Kumar¹,

Levin²

2011

AIP Conference Proceedings

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Thermal analysis for Orbiter and ISS plume impingement on International Space Station

Abstract: The NASA Reaction Control System (RCS) Plume Model (RPM) is an exhaust plume flow field and impingement heating code that has been updated and applied to

Cited by 9 publications

References 2 publications

Simulation of homogeneous condensation of small polyatomic systems in high pressure supersonic nozzle flows using Bhatnagar–Gross–Krook model

Simulation of homogeneous condensation of small polyatomic systems in high pressure supersonic nozzle flows using Bhatnagar–Gross–Krook model

Modeling of carbon dioxide condensation in the high pressure flows using the statistical BGK approach

Simulation of Homogeneous Condensation of Ethanol in High Pressure Supersonic Nozzle Flows using BGK Condensation Model

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