高焓加热实验壁面催化效应分析

苗文博; 史可天; 欧东斌; 曹占伟; 艾邦成

doi:10.11729/syltlx20180177

高焓加热实验壁面催化效应分析

doi: 10.11729/syltlx20180177

1.
中国航天空气动力技术研究院, 北京 100074
2.
中国运载火箭技术研究院空间物理重点实验室, 北京 100076

详细信息

作者简介:
苗文博(1980-), 男, 陕西宝鸡人, 博士, 研究员.研究方向:非平衡热环境模拟及气动物理研究.通信地址:北京市7201信息6分箱(100071).E-mail:tingles@126.com

通讯作者:
史可天, E-mail:shiketian@aliyun.com

中图分类号: V211.7
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- 文章访问数: 136
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- 被引次数: 0
出版历程
- 收稿日期: 2018-11-08
- 修回日期: 2019-03-09
- 刊出日期: 2019-06-25

Analysis of surface recombination effect in arc-jet aero-heating test

1.
China Academy of Aerospace Aerodynamics, Beijing 100074, China
2.
Science and Technology on Space Physics Laboratory, China Academy of Launch Vehicle Technology, Beijing 100076, China

摘要

摘要: 高焓地面加热实验中存在显著的壁面催化复合现象。热防护材料催化性能较低时，如果进行状态标定时不考虑壁面催化效应，将导致地面加热考核实验欠考核。基于平板加热实验，通过结构传热分析与地面实验数据对比，发展了高焓加热实验壁面催化效应分析方法。该方法可以评估加热实验状态典型热防护材料催化效应，从而为地面实验方案改进和完善提供技术支撑。通过分析发现，对于某热防护材料，催化效应使得真实受热仅为标定热流的85%左右，在采用铜制塞式热流传感器进行热流标定时，需要考虑催化效应加严考核条件，才能保证有效考核。
- 高焓加热 /
- 地面实验 /
- 催化效应 /
- 热考核
Abstract: There exists evident surface recombination of atoms in the high enthalpy aero-heating test. When the catalysis of TPM (Thermal Protection Material) is low, the calibration of aero-heating should consider surface recombination; otherwise it would cause under-estimation of TPM. Based on the flat aero-heating test, the analysis method of surface recombination effects in the arc-jet flow was developed by comparison of the structure heat transfer simulation and test data. This method can evaluate surface recombination effects on special TPM in arc-jet tests, and give support on modification and improvement of test projects. The analysis results show that, for a kind of TPM, the surface recombination effect makes the real aero-heating to be only about 85 percent of the calibrated heat flux. Therefore, the surface recombination effect should be considered when the copper sensor is used to calibrate the aero-heating, and the flow condition should be enhanced to ensure effective assessment.
- high enthalpy aero-heating /
- ground test /
- surface recombination effect /
- thermal evaluation

HTML全文

图 1 喷管及平板结构示意图

Figure 1. Sketch maps of jet and flat structure

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图 2 平板背面温升曲线

Figure 2. Temperature profile at backside of flat plane

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图 3 平板表面热流云图

Figure 3. Heat flux on the flat plane

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图 4 不同焓值条件下温度响应曲线

Figure 4. Temperature profile under different enthalpy conditions

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图 5 不同热流条件平板温升曲线与实验测量结果对比

Figure 5. Comparision of temperature profiles between simulation and test

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