| 单面射流冲击淬火参数对7050铝合金厚板冷却的影响 |
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| 引用本文： | 曹盛强,熊创贤,邓运来,张新明.单面射流冲击淬火参数对7050铝合金厚板冷却的影响[J].航空材料学报,2011,31(1):31-35. |
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| 作者姓名： | 曹盛强 熊创贤 邓运来 张新明 |
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| 作者单位： | 1. 中南大学,材料科学与工程学院,长沙,410083
2. 中南大学,材料科学与工程学院,长沙,410083;湖南城市学院,土木工程系,湖南,益阳,413000 |
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| 基金项目： | 国家重点基础研究计划资助项目(2005CB623700) |
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| 摘 要： | 研究了喷嘴直径(D)、相邻喷嘴距离(L)和喷射压力(P)对驻点区和紊流区换热的影响.结果表明:在高压(500kPa)下,紊流区心部换热效果比驻点区心部强;当喷嘴直径和喷射压力一定,相邻喷嘴距离对厚板冷却有影响,距离越小,相邻涡对互相干扰越大,紊流区冷却强度加大;当L/D=8～14时,从470℃冷至300℃的平均冷却速率...
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| 关 键 词： | 冲击换热 喷射流 喷嘴 铝合金 |
Effect of Single-side Injection Quenching Parameters on Cooling of 7050 Aluminum Alloy Plate |
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| CAO Sheng-qiang,XIONG Chuang-xian,DENG Yun-lai,ZHANG Xin-ming.Effect of Single-side Injection Quenching Parameters on Cooling of 7050 Aluminum Alloy Plate[J].Journal of Aeronautical Materials,2011,31(1):31-35. |
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| Authors: | CAO Sheng-qiang XIONG Chuang-xian DENG Yun-lai ZHANG Xin-ming |
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| Institution: | CAO Sheng-qiang1,XIONG Chuang-xian1,2,DENG Yun-lai1,ZHANG Xin-ming1 (1.School of Materials Science and Engineering,Central South University,Changsha 410083,China,2.Department of Civil Engineering,Hunan City University,Yiyang 413000,Hunan China) |
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| Abstract: | Impingement heat transfer is not only related to the types of fluid,the impacted surface morphology and the pressure of injection,but also related to the size and layout of nozzles.This article studied the influence of diameter(D) of nozzles,the distance(L) of adjacent nozzles and the injection pressure(P) to the heat transfer in the stagnation and turbulent.The results show that the effect of heat exchange in turbulent region of samples centre is stronger than that of stagnation region by 500kPa impinging.... |
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| Keywords: | heat transfer of impinging jet spraying jet flow nozzle aluminum alloy |
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