圆箔压力热流计的研制与测试结果分析

朱新新; 杨远剑; 王辉; 李泽禹; 罗跃

doi:10.11729/syltlx20230044

圆箔压力热流计的研制与测试结果分析

doi: 10.11729/syltlx20230044

中国空气动力研究与发展中心超高速空气动力研究所，绵阳　621000

详细信息

作者简介:
朱新新：（1988—），男，云南保山人，硕士，助理研究员。研究方向：气动热与热防护试验测试技术。通信地址：四川省绵阳市二环路南段6号15信箱504分箱（621000）。E-mail：xinxincomplex@126.com

通讯作者:
E-mail：wang_sunshine@163.com

中图分类号: O551.1；V411.7
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- 被引次数: 0
出版历程
- 收稿日期: 2023-03-13
- 修回日期: 2023-06-08
- 录用日期: 2023-06-15
- 网络出版日期: 2023-08-31

Development and experimental analysis of circular foil pressure-heat flux gage

Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang　621000, China

摘要

摘要: 针对长时间变轨道试验的热流测量需求，基于传统戈登计发展了一种可同时测量热流和压力的圆箔压力热流计。开展了辐射热流标定试验、电弧风洞平板比对试验和数值计算分析。新研制的圆箔压力热流计能够在电弧风洞多状态连续试验中同时同点位测得平板模型表面热流和压力，热流和压力测量重复性精度分别约为3.6%和1.9%；与塞块量热计相比，热流测量值平均偏低约14.7%。其原因在于：对流测量环境中圆箔压力热流计的热流灵敏度系数减小；康铜片温度相对过高，形成局部热点，导致实际进入圆箔压力热流计的热流减小。最后给出了圆箔压力热流计和传统戈登计测量对流热的使用建议。
- 圆箔压力热流计 /
- 热流测量 /
- 平板试验 /
- 灵敏度系数 /
- 局部热点 /
- 电弧风洞
Abstract: Based on the demand of heat flux measurement in the continuous test of vehicle changing orbit, the circular foil pressure-heat flux gage that also can get pressure is developed on the basis of the traditional Gardon gage. The thermal radiation calibration test, the different plate comparison tests in the arc-heated wind tunnel, and numerical calculation analysis are carried out. The results show that the new circular foil pressure-heat flux gage can simultaneously get heat flux and pressure at the same point of the plate model in the multistate continuous arc-heated wind tunnel test. Repeatability accuracy of heat flux and pressure measurement are about 3.6% and 1.9% respectively. Compared with the slug calorimeter, the heat flux value measured by the circular foil pressure-heat flux gage is lower than 14.7%. There are two main reasons for the discrepancy. On one hand, the gage sensitivity coefficient decreases in the convective measurement environment; on the other hand, the incident heat flux of the gage decreases because the temperature of the constantan foil is relatively high so that a local hot spot is formed. Finally, some suggestions for the use of the new circular foil pressure-heat flux gage and traditional Gardon gage are given.
- circular foil pressure-heat flux gage /
- heat flux measurement /
- plate test /
- sensitivity coefficient /
- local hot spot /
- arc-heated wind tunnel

HTML全文

图 1 圆箔计结构示意图

Figure 1. The structure of circular foil gage

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图 2 圆箔计照片

Figure 2. The photo of circular foil gage

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图 3 热流标定曲线

Figure 3. Heat flux calibration curve

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图 4 装有圆箔计的水冷平板

Figure 4. Water-cooled plate equipped with circular foil gages

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图 5 装有塞块量热计的平板

Figure 5. The plate equipped with slug calorimeters

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图 6 电弧风洞平板试验

Figure 6. The plate test in arc heated wind tunnel

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图 7 圆箔计的热流和压力曲线

Figure 7. Heat flux and pressure curve of circular foil gage

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图 8 计算模型和State 1的速度云图

Figure 8. Numerical calculation model and velocity nephogram of State 1

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图 9 压力测量值与计算值对比

Figure 9. Pressure measured versus numerical calculation

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图 10 热流测量值与计算值对比

Figure 10. Heat flux measured versus numerical calculation

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图 11 康铜片的温度云图

Figure 11. Temperature nephogram of constantan foil

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图 12 速度云图

Figure 12. Velocity nephogram

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图 13 热流分布

Figure 13. Heat flux distribution

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表 1 试验状态参数

Table 1. Test status parameter

状态	总焓/（kJ·kg⁻¹）	总压/kPa	平板迎角/（°）
State 1	3060	607	0
State 2	3740	883	0
State 3	3820	1460	0

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表 2 1#测点测量结果

Table 2. Measurement results of 1# test point

状态	热流/（kW·m⁻²）			压力/kPa
状态	Test 1	Test 2	Test 3	Test 1	Test 2	Test 3
State 1	413	427	436	17.5	17.5	17.4
State 2	718	700	730	25.8	25.5	25.2
State 3	1086	1064	1144	41.0	40.8	40.3

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表 3 不同网格计算结果

Table 3. Calculation results by different grids

网格	第一层网格高度/mm	平板监测热流/（kW·m⁻²）
网格	第一层网格高度/mm	20000步	21000步	22000步
Grid 1	0.01	431.1	431.1	431.1
Grid 2	0.001	1006.7	1006.7	1006.7
Grid 3	0.0005	1012.4	1012.4	1012.4

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表 4 测量值与计算值对比

Table 4. Measurement results versus numerical calculation results

状态	平均压力/kPa			平均热流/（kW·m⁻²）
状态	计算值	传统压力孔测量值	圆箔计测量值	计算值	塞块量热计测量值	圆箔计测量值
State 1	13.39	15.7	15.5	472	447	370
State 2	20.2	21.4	22.2	817	713	603
State 3	31.4	36.3	35.8	1213	1062	924
平均值	21.7	24.4	24.5	834	741	632

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