Current Grid Generation Strategies and Future Requirements in Hypersonic Vehicle Design, Analysis and Testing
Current Grid Generation Strategies and Future Requirements in Hypersonic Vehicle Design, Analysis and Testing
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DOI：
10.1016/s0307-904x(99)00007-4
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发表时间：
1999-09
影响因子：
5
通讯作者：
P. Papadopoulos;E. Venkatapathy;D. Prabhu;M. Loomis;D. Olynick
中科院分区：
文献类型：
--
作者：
P. Papadopoulos;E. Venkatapathy;D. Prabhu;M. Loomis;D. Olynick
计算能力的最新进展使越来越复杂的配置的计算流体动力学建模成为可能。本文综述了为支持X-38（实验乘员返回飞行器）和X-33高超声速飞行器的计算工作而实施的网格生成方法。在战略拓扑结构和块结构，考虑的因素是几何配置，最佳网格大小，数值算法，精度要求，物理问题的手，计算费用和可用的计算机硬件。还讨论了网格细化策略，壁间距和收敛的效果。通过X-38飞行器所经历的气动加热环境的计算结果和实验结果的比较，证明了网格的重要性。关于网格生成策略的专题也涉及模型控制面偏转和材料映射。
Recent advances in computational power enable computational fluid dynamic modeling of increasingly complex configurations. A review of grid-generation methodologies implemented in support of the computational work performed for the X-38 (Experimental Crew Return Vehicle) and X-33 hypersonic vehicles are presented. In strategizing topological constructs and blocking structures, the factors considered are geometric configuration, optimal grid size, numerical algorithms, accuracy requirements, physics of the problem at hand, computational expense and available computer hardware. Also addressed are grid-refinement strategies, the effect of wall spacing and convergence. The significance of grids is demonstrated through a comparison of computational and experimental results of the aeroheating environment experienced by the X-38 vehicle. Special topics on grid-generation strategies are also addressed to model control surface deflections and material mapping.