| 冰围绕J=1/2,2水平椭圆柱的压力熔化 |
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| 引用本文： | 陈文振,杨强生.冰围绕J=1/2,2水平椭圆柱的压力熔化[J].科技通报,1999,15(5):347-349. |
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| 作者姓名： | 陈文振 杨强生 |
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| 作者单位： | 上海交通大学动力与能源工程学院,上海,200030 |
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| 摘 要： | 研究了冰围绕压缩比Ｊ＝１／２，２水平椭圆柱的压力熔化。求得边界层厚度、作用力与椭圆柱下降速度的关系。分析表明：（１）Ｊ＝１／２，２的椭圆柱，边界层厚度随圆周角变化，且变化规律不同。（２）同一椭圆柱，以Ｊ＝２方式熔化的速度为Ｊ＝１／２熔化速度的４倍，并大于相同面积的圆柱熔化速度。
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| 关 键 词： | 接触熔化 相变现象 椭圆柱 冰 |
| 文章编号： | 1001-7119(1999)05-0347-03 |
| 修稿时间： | 1998年6月22日 |
Pressure Melting of Ice around the Elliptical Cylinders with J= 1/2,2 |
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| CHEN Wen-zhen,YANG Qiang-sheng.Pressure Melting of Ice around the Elliptical Cylinders with J= 1/2,2[J].Bulletin of Science and Technology,1999,15(5):347-349. |
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| Authors: | CHEN Wen-zhen YANG Qiang-sheng |
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| Abstract: | The pressure melting of a block ice around the moving elliptical cylinders with J =1/2 and 2 was analyzed.The film thickness and the relationship between the force applied and the speed with which the elliptical cylinders migrate into the ice block were obtained by calculating.It was found that:(1)the film thickness varies with the angular position,and is different trend for J =1/2,2.(2)For the same elliptical cylinder,the melting speed for J =1/2 is 4 times as that for J =1/2,and larger than that for cylinder with the same cross area. |
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| Keywords: | contact melting phase change phenomena elliptical cylinder ice |
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