高焓边界层转捩预测

孙泓朴; 戴梧叶; 吴宁宁; 许灵芝

doi:10.13224/j.cnki.jasp.20230696

高焓边界层转捩预测

doi: 10.13224/j.cnki.jasp.20230696

北京空天技术研究所，北京 100074

详细信息

作者简介:
孙泓朴（2000-），男，硕士生，主要从事流动稳定性等方面的研究。E-mail：596424939@qq.com

通讯作者:
戴梧叶（1974-），男，研究员，博士，主要从事飞行器设计、空气动力学以及CFD技术等方面的研究。E-mail：daiwuye@139.com

中图分类号: V211.1.3
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出版历程
- 收稿日期: 2023-11-06
- 网络出版日期: 2024-06-29

Transition prediction of high enthaply boundary layer

Beijing Aerospace Technology Institute，Beijing 100074，China

摘要

摘要:
针对高温真实气体效应对边界层转捩的影响，使用高马赫数修正后的γ-Re_θ转捩模型展开了研究。对典型算例的边界层转捩进行了计算分析并与DNS（直接数值模拟）结果和试验结果进行了对比，结果表明：对于高速高焓边界层：原始γ-Re_θ转捩模型预测的转捩起始位置过于提前，而高马赫数修正后的转捩模型预测的转捩位置有明显后移，并且能够更好地与试验数据吻合；高温真实气体效应会使得边界层内温度降低、厚度变薄，对边界层转捩具有促进作用。
- 边界层转捩 /
- 高速 /
- 转捩模型 /
- 高温真实气体效应 /
- 高马赫数修正
Abstract:
Considering the influence of high temperature real gas effect on boundary layer transition, the γ-Re_θ transition model modified by high Mach number was used for research. The boundary layer transition of typical cases was calculated and the results were compared with DNS （direct numerical simulation） and tests. The results showed that: for high speed and high enthalpy boundary transition, the original γ-Re_θ transition model predicted the transition location prematurely, while the transition location predicted by the transition model with high Mach number correction was more consistent with the experimental results. The high temperature real gas effect reduced the temperature and the thickness of the boundary layer, and promoted the boundary layer transition.
- boundary layer transition /
- high speed /
- transition model /
- high temperature real gas effects /
- high Mach number correction

HTML

图 1 高温真实气体效应示意图^[3]

Figure 1. Real gas effect at high temperature^[3]

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图 2 XCFD转捩模型流程图

Figure 2. Flow chart of XCFD transition model

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图 3 平板计算网格

Figure 3. Flat plate computing grid

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图 4 湍流度衰减效应对比图

Figure 4. Comparison of turbulence attenuation effect

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图 5 高速平板摩阻分布

Figure 5. High speed plate friction distribution

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图 6 ELECTRE钝锥外形正三轴测图

Figure 6. ELECTRE blunt cone positive triaxial mapping

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图 7 ELECTRE钝锥O₂与N₂质量分数分布

Figure 7. Mass fraction distribution of O₂ and N₂ around ELECTRE blunt cone

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图 8 不同气体模型基本流对比

Figure 8. Comparison of basic flow of different gas models

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图 9 x=0.2 m处流场截面对比

Figure 9. Comparison of flow field cross section at x=0.2 m

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图 10 ELECTRE钝锥转捩模型计算热流与试验对比

Figure 10. Comparison of ELECTRE blunt cone heat flow calculated by transition model and test

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