Dynamic Simulation of Deposition Processes of Spacecraft Molecular Contamination

Dynamic Simulation of Deposition Processes of Spacecraft Molecular Contamination

Accurate simulation and calculation of the deposition of outgassing molecule can shorten the cycle and reduce the cost of vacuum tests on satellites. It also provides a reference for contamination protection design by systems engineers. In this study, the molecular outgassing, transport and depositi...

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Bibliographic Details
Main Authors: Jia Qiao*, Shengsheng Yang, Jianjun Li, Xing Guo, Yi Wang
Format: Article
Language:English
Published: Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek 2021-01-01
Series:Tehnički Vjesnik
Subjects:
angle coefficient method
diffusion theory
first order desorption
Online Access:https://hrcak.srce.hr/file/366039
id doaj-39ac45f76c064b6dad690c373422b9c5
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spelling doaj-39ac45f76c064b6dad690c373422b9c52021-03-01T08:10:41ZengFaculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek Tehnički Vjesnik1330-36511848-63392021-01-01281321327Dynamic Simulation of Deposition Processes of Spacecraft Molecular ContaminationJia Qiao*0Shengsheng Yang1Jianjun Li2Xing Guo3Yi Wang4Lanzhou Institute of Physics, Lanzhou, Gansu, 730000, ChinaLanzhou Institute of Physics, Lanzhou, Gansu, 730000, ChinaLanzhou institute of Physics, Lanzhou, Gansu, 730000, ChinaLanzhou Institute of Physics, Lanzhou, Gansu, 730000, ChinaLanzhou Institute of Physics, Lanzhou, Gansu, 730000, ChinaAccurate simulation and calculation of the deposition of outgassing molecule can shorten the cycle and reduce the cost of vacuum tests on satellites. It also provides a reference for contamination protection design by systems engineers. In this study, the molecular outgassing, transport and deposition processes were simulated by diffusion theory, the angle coefficient method, and the first-order desorption equation, respectively. The simulation results were consistent with the test data trends, but deviated from the test values. Given the effect of initial molecular outgassing rate, diffusion coefficient and residence time on the deposition mass, it was surmised that considering the molecular species and the weight mass rate would improve the calculation result. These considerations indeed improved the numerical simulations of high-vacuum contamination.https://hrcak.srce.hr/file/366039angle coefficient methoddiffusion theoryfirst order desorption
collection DOAJ
language English
format Article
sources DOAJ
author Jia Qiao*
Shengsheng Yang
Jianjun Li
Xing Guo
Yi Wang
spellingShingle Jia Qiao*
Shengsheng Yang
Jianjun Li
Xing Guo
Yi Wang
Dynamic Simulation of Deposition Processes of Spacecraft Molecular Contamination
Tehnički Vjesnik
angle coefficient method
diffusion theory
first order desorption
author_facet Jia Qiao*
Shengsheng Yang
Jianjun Li
Xing Guo
Yi Wang
author_sort Jia Qiao*
title Dynamic Simulation of Deposition Processes of Spacecraft Molecular Contamination
title_short Dynamic Simulation of Deposition Processes of Spacecraft Molecular Contamination
title_full Dynamic Simulation of Deposition Processes of Spacecraft Molecular Contamination
title_fullStr Dynamic Simulation of Deposition Processes of Spacecraft Molecular Contamination
title_full_unstemmed Dynamic Simulation of Deposition Processes of Spacecraft Molecular Contamination
title_sort dynamic simulation of deposition processes of spacecraft molecular contamination
publisher Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek
series Tehnički Vjesnik
issn 1330-3651
1848-6339
publishDate 2021-01-01
description Accurate simulation and calculation of the deposition of outgassing molecule can shorten the cycle and reduce the cost of vacuum tests on satellites. It also provides a reference for contamination protection design by systems engineers. In this study, the molecular outgassing, transport and deposition processes were simulated by diffusion theory, the angle coefficient method, and the first-order desorption equation, respectively. The simulation results were consistent with the test data trends, but deviated from the test values. Given the effect of initial molecular outgassing rate, diffusion coefficient and residence time on the deposition mass, it was surmised that considering the molecular species and the weight mass rate would improve the calculation result. These considerations indeed improved the numerical simulations of high-vacuum contamination.
topic angle coefficient method
diffusion theory
first order desorption
url https://hrcak.srce.hr/file/366039
work_keys_str_mv AT jiaqiao dynamicsimulationofdepositionprocessesofspacecraftmolecularcontamination
AT shengshengyang dynamicsimulationofdepositionprocessesofspacecraftmolecularcontamination
AT jianjunli dynamicsimulationofdepositionprocessesofspacecraftmolecularcontamination
AT xingguo dynamicsimulationofdepositionprocessesofspacecraftmolecularcontamination
AT yiwang dynamicsimulationofdepositionprocessesofspacecraftmolecularcontamination
_version_ 1724246786709651456

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