• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>AIAA Aerospace Sciences Meeting;AIAA SciTech Forum >Double-Cone Flows in Nonequilibrium: Comparison of CFD with Experimental Data
【24h】

Double-Cone Flows in Nonequilibrium: Comparison of CFD with Experimental Data

机译：非平衡中的双锥流：CFD与实验数据的比较

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

High-enthalpy nonequilibrium laminar flows are studied for a 25-5S deg double-cone geometry, using a real-gas multi-species LLTR model (Landau-Teller vibrational relaxation model and Park dissociation model) and a STS (state-to-state) model with the more accurate QCT rates for the 03 system. Surface pressure and heat flux distributions are compared with experimental data obtained at the CUBRC LENS-XX expansion tunnel facility. Several possible causes for previously reported discrepancies between numerical simulations and experiments are identified to understand the role of different nonequilibrium models. However, CFD poorly predicts the peak pressure and heat flux on the surface of the complex shock system and the recirculation region in the separation zone. The STS model with the more accurate rates appears to have a significant influence on the size and location of the separation zone. The study encourages us to include in future studies the STS approach for other species in the air mixture.
机译：使用真实气体多物种LLTR模型（Landau-Teller振动弛豫模型和Park解离模型）和STS（状态对状态）研究了25-5S度双锥几何形状的高焓非平衡层流）模型，以使03系统具有更准确的QCT速率。将表面压力和热通量分布与在CUBRC LENS-XX膨胀隧道设施中获得的实验数据进行了比较。确定了先前报道的数值模拟和实验之间的差异的几种可能原因，以了解不同的非平衡模型的作用。但是，CFD不能很好地预测复杂冲击系统表面和分离区中回流区域的峰值压力和热通量。具有更精确速率的STS模型似乎对分离区的大小和位置有重大影响。该研究鼓励我们在未来的研究中纳入空气混合物中其他物种的STS方法。

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