| 多孔铝制备中铝液渗流过程的模拟 |
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| 引用本文： | 余欢,林再学,周尧和.多孔铝制备中铝液渗流过程的模拟[J].航空学报,2000,21(5):477-480. |
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| 作者姓名： | 余欢 林再学 周尧和 |
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| 作者单位： | 1. 南昌航空工业学院,材料工程系,江西,南昌,330034
2. 西北工业大学,凝固技术国家重点实验室,陕西,西安,710072 |
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| 摘 要： | 通过渗流过程水力模拟试验,提出了铝液在多孔介质中大雷诺数渗流的数学模型,并结合温度场数值模拟计算,对铝液渗流规律进行了探讨,发现渗流具有二次非线性特性。通过与实际铝合金渗流实验进行对比表明,根据数值模拟的结果与水力模拟试验及实际铝合金渗流结果基本吻合。进而提出了采用中压高速渗流法制备细孔 (直径 0.4 mm)多孔泡状铝合金
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| 关 键 词： | 渗流 水力模拟 多孔铝合金 数值模拟 制备 |
| 修稿时间： | 1999-06-01 |
SIMULATION OF LIQUID ALUMINUM INFILTRATION IN FABRICATION OF POROUS ALUMINUM |
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| YU Huan,LIN Zai-xue,ZHOU Yao-he.SIMULATION OF LIQUID ALUMINUM INFILTRATION IN FABRICATION OF POROUS ALUMINUM[J].Acta Aeronautica et Astronautica Sinica,2000,21(5):477-480. |
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| Authors: | YU Huan LIN Zai-xue ZHOU Yao-he |
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| Institution: | 1. Department of Materials Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034,China;2. The State Key Laboratory of Solidification Processing,Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | High Reynolds number infiltration of liquid aluminum in porous media has been investigated through hydraulic simulating test, a mathematical model of the high Reynolds number infiltration of liquid aluminum in porous media has been put forward, and the infiltration rule is discussed with the numerical calculating of the temperature traverse. It is found that the infiltration possesses second order non linear characteristics. The numerically calculated results based on the model agree with the hydraulic simulation and aluminum alloy infiltration. The high speed infiltration under medium pressure has been proposed, and porous aluminum alloy with thin holes (diameter 0.4mm) has been fabricated. |
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| Keywords: | infiltration hydraulic simulation porous aluminum alloy numerical simulation fabrication |
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