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首页> 外文期刊>Journal of Spacecraft and Rockets >Plume Impingement Analysis for Aeolus Spacecraft and Gas/Surface Interaction Models
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Plume Impingement Analysis for Aeolus Spacecraft and Gas/Surface Interaction Models

机译：风神航天器的羽流撞击分析和气体/表面相互作用模型

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摘要

A numerical analysis of plume impingement onto solar arrays of the Aeolus spacecraft was performed for plumes exhausted from a single thruster or four thrusters simultaneously. Spacecraft configurations with stowed and deployed solar arrays were considered. The arrays were located at large angles from the thruster centerline or at a large distance from the thrusters. Therefore, for both configurations, all flow regimes were expected, from continuum through transitional to free-molecular. To perform the analysis, a multizone approach was used. It applied a solution of Navier-Stokes equations in the thruster nozzle and near-plume field and applied the direct simulation Monte Carlo method for plume impingement. Results showed that the plume effects were affected by chemical composition and the thruster vector. A flow near the solar array surface was almost free-molecular and a gas/surface interaction was very important to provide reliable results. Several gas/surface interaction models, diffuse reflection, and different versions of the Nocilla model were used to compute the plume impingement effects. Those versions used model parameters obtained for orbital conditions with high molecular velocities and plume impingement with moderate molecular velocities.
机译：对于从单个推进器或四个推进器同时排出的羽流，对风神航天器的太阳能电池阵列上的羽流撞击进行了数值分析。考虑了带有存放和展开的太阳能阵列的航天器配置。阵列位于与推进器中心线成较大角度或与推进器成较大距离的位置。因此，对于这两种构型，从连续到过渡到自由分子的所有流动方式都是可以预期的。为了进行分析，使用了多区域方法。它在推进器喷嘴和近浮子场中应用了Navier-Stokes方程的解，并应用了直接模拟蒙特卡洛方法进行羽流撞击。结果表明，羽流效应受化学成分和推进器矢量的影响。太阳电池阵列表面附近的流动几乎是自由分子，而气体/表面相互作用对于提供可靠的结果非常重要。使用几种气体/表面相互作用模型，漫反射和Nocilla模型的不同版本来计算羽流撞击效果。这些版本使用的模型参数是针对具有较高分子速度的轨道条件和具有中等分子速度的羽流撞击而获得的。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2007年第3期|p.607-618|共12页
  • 作者

    Gennady N. Markelov;

  • 作者单位

    Advanced Operations and Engineering Services Group, B. V., 2300 AH Leiden, The Netherlands;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空;
  • 关键词

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