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DSMC-based correction factor for low-fidelity hypersonic aerodynamics of re-entering objects and space debris

机译:基于DSMC的低保真高超声速空气动力学技术,可重新进入物体和空间碎片

摘要

This work investigates the differences between hypersonic aerodynamic coefficients computed with two different tools, having two different levels of fidelity: a high fidelity code implementing the Direct Simulation Monte Carlo method and a low fidelity one based on the approximated hypersonic local surface inclination technique. Different multivariate correction factors to reduce the low-fidelity tool error have been defined using a High Dimensional Model Representation algorithm. The low fidelity approach with the implemented correction factor has been tested on different space objects, the Gravity field and steadystate Ocean Circulation Explorer satellite and a 3U CubeSat with a deployed drag sail; the results are presented and commented.
机译:这项工作研究了使用两种不同的工具(具有两种不同的保真度)计算出的高超声速空气动力学系数之间的差异:实现直接模拟蒙特卡洛方法的高保真度代码和基于近似高超声速局部曲面倾斜技术的低保真度代码。使用高维模型表示算法已定义了不同的多元校正因子,以减少低保真度工具错误。具有修正系数的低保真度方法已在不同的空间物体,重力场和稳态海洋环流探测器卫星以及带有展开风帆的3U CubeSat上进行了测试;结果被提出和评论。

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