• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Spacecraft and Rockets >Loosely Coupled Simulation for Two-Dimensional Ablation and Shape Change
【24h】

Loosely Coupled Simulation for Two-Dimensional Ablation and Shape Change

机译：二维烧蚀和形状变化的松耦合模拟

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The central focus of this study is to demonstrate that time-accurate solutions for multidimensional ablation and shape change of thermal protection system materials may be obtained by loose coupling of a high-fidelity flow solver with a material thermal response code. In this study, the flow code solves the nonequilibrium Navier-Stokes equations using the data-parallel line-relaxation (DPLR) method. The material response code is the latest version of the Two-dimensional Implicit Thermal Response and Ablation Program (TITAN). In TITAN, the governing equations, which include a three-component decomposition model and a surface energy balance with thermo-chemical ablation, are solved with a robust moving-grid scheme to predict the shape change caused by surface recession. Coupling between the material response and flow codes is required for many multidimensional ablation simulations, because the magnitude and distribution of the surface heat flux are very sensitive to shape change. This paper demonstrates the application of the TITAN-DPLR system to problems with large-scale recession and shape change. Ablation and thermal response simulations are presented for iso-q and flat-faced arc-jet test models and also for a wedge with a cylindrical leading edge exposed to hypersonic flow at various angles of attack.
机译：这项研究的重点是证明通过将高保真流动求解器与材料热响应代码进行松耦合，可以获得用于热防护系统材料的多维烧蚀和形状变化的时间精确解决方案。在这项研究中，流程代码使用数据平行线松弛（DPLR）方法求解了非平衡Navier-Stokes方程。材料响应代码是二维隐式热响应和烧蚀程序（TITAN）的最新版本。在TITAN中，使用鲁棒的移动网格方案求解控制方程，该控制方程包括三组分分解模型和具有热化学烧蚀的表面能平衡，以预测由表面凹陷引起的形状变化。在许多多维烧蚀模拟中，材料响应和流代码之间需要耦合，因为表面热通量的大小和分布对形状变化非常敏感。本文演示了TITAN-DPLR系统在大规模衰退和形状变化问题上的应用。针对iso-q和平面电弧喷射测试模型以及带有圆柱形前缘的楔形物，分别在不同迎角下暴露于高超声速流中，给出了烧蚀和热响应模拟。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号