| 高压交联电缆终端局部发热原因及对策分析 |
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| 引用本文： | 王佩龙,刘毅刚. 高压交联电缆终端局部发热原因及对策分析[J]. 中华医学图书情报杂志, 2013, 0(4): 42-45 |
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| 作者姓名： | 王佩龙 刘毅刚 |
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| 作者单位： | 中国空气动力研究与发展中心超高速所,四川 绵阳 621000;中国航天科工集团三十一研究所,北京 100074;中国空气动力研究与发展中心超高速所,四川 绵阳 621000;中国航天科工集团三十一研究所,北京 100074;中国空气动力研究与发展中心超高速所,四川 绵阳 621000;中国空气动力研究与发展中心超高速所,四川 绵阳 621000 |
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| 摘 要： | 进气道是飞行器动力装置的重要组成部分,准确测量进气道流量系数是进气道风洞试验的重要内容。对来流马赫数Ma=4.5,5.0和6.0状态下皮托管进气道开展流量系数测量研究,通过对比理论值和实测值,获取各状态流量系数修正系数。试验结果表明,随着来流马赫数增加,进气道流量系数与理论值偏差较明显,并逐渐增大。超声速风洞试验通常认为测量截面总温与来流总温相等,通过对测量截面总温与来流总温偏差以及测量截面流场畸变情况的分析,判断测量偏差主要是由测量截面总温等于来流总温的假设导致的。在高超声速风洞试验中,由于模型壁面热交换的存在,测量截面总温低于来流总温,进气道流量系数测量时需要进行总温修正,以提高流量测量精度。
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| 关 键 词： | 超声速进气道 高超声速风洞 试验 流量系数 |
Analysis of Causes and Countermeasures against Local Heat on Terminals of HV Cross-linked Cables |
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| WANG Pei-long and LIU Yi-gang. Analysis of Causes and Countermeasures against Local Heat on Terminals of HV Cross-linked Cables[J]. Chinese Journal of Medical Library and Information Science, 2013, 0(4): 42-45 |
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| Authors: | WANG Pei-long and LIU Yi-gang |
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| Affiliation: | Hypervelocity Research Institute of China Aerodynamics Research and Development Center, Mianyang 621000, China;The 31st Reaearch Institute of CASIC, Beijing 100074, China;Hypervelocity Research Institute of China Aerodynamics Research and Development Center, Mianyang 621000, China;The 31st Reaearch Institute of CASIC, Beijing 100074, China;Hypervelocity Research Institute of China Aerodynamics Research and Development Center, Mianyang 621000, China;Hypervelocity Research Institute of China Aerodynamics Research and Development Center, Mianyang 621000, China |
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| Abstract: | The paper analyzes the electric field of local heat on terminals of HV cross-linked cables; besides, local heat of sheath is inspected by use of infrared image and ultrasonic PD test. It is proved that local heat of terminal sheath relates to high magnetic field and improvement of local electric field can eliminate the heat on cable sheath. |
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| Keywords: | Supersonic inlet Hypersonic wind tunnel Experiment Flow coefficient |
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