| 磁性液体对射流冲击传热的强化 |
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| 引用本文： | 陈永昌,马重芳,苑中显.磁性液体对射流冲击传热的强化[J].工程热物理学报,2000,21(5):615-618. |
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| 作者姓名： | 陈永昌 马重芳 苑中显 |
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| 作者单位： | 北京工业大学环境与能源工程学院, 北京 100022 |
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| 基金项目： | 国家自然科学基金!（No．59686002），北京市教育委员会资助项目!（No．961009） |
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| 摘 要： | 本文对磁液应用于射流冲击传热的影响进行了实验研究。采用变压器油和煤油基磁液ＣＩ－２０Ｂ作为工质，把 １３×５ ｍｍ的康铜金属膜作为加热面和传热面，进行自由表面液体窄缝射流冲击，使用的喷嘴窄缝宽度为 ２５０微米，射流速度变化范围 ５．７ ｍ／ｓ～８．５ ｍ／ｓ。分别对附加磁液前后的射流传热实验结果进行比较，表明磁液的使用对射流冲击传热具有一定的强化。
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| 关 键 词： | 磁性液体 射流冲击 强化换热 |
| 文章编号： | 0253-231X(2000)05-0615-04 |
| 修稿时间： | 2000年1月17日 |
HEAT TRANSFER ENHANCEMENT OF IMPINGING JETS WITH FERROFLUID |
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| CHEN Yongchang,Ma Chongfang,YUAN Zhongxian.HEAT TRANSFER ENHANCEMENT OF IMPINGING JETS WITH FERROFLUID[J].Journal of Engineering Thermophysics,2000,21(5):615-618. |
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| Authors: | CHEN Yongchang Ma Chongfang YUAN Zhongxian |
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| Abstract: | Experiment study was performed to investigate heat transfer enhancement of free surface impinging liquid jets with ferrofluid. Transformer oil and a kind of kerosenebased ferrofluid C1-20B were used as working liquids. A Slot nozzle of 250 um in width is used in the experiment and jet velocities varied from 5.7 m/s to 8.5 m/s. A simulated heater of 13 x5 mm was exposed to the liquid jets as a heat transfer surface. The results were compared between with and without magnetofluid. Heat transfer enhancement was found in the experiment. |
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| Keywords: | magnetofluid jet impingement heat transfer enhancement |
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