| 空温式翅片管气化器结霜模型及数值模拟 |
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| 引用本文： | 陈叔平,姚淑婷,谢福寿,常智新,韩宏茵. 空温式翅片管气化器结霜模型及数值模拟[J]. 低温与超导, 2011, 39(11): 64-67 |
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| 作者姓名： | 陈叔平 姚淑婷 谢福寿 常智新 韩宏茵 |
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| 作者单位： | 兰州理工大学石油化工学院,兰州,730050 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 以分形理论的DLA模型为基础,建立了空温式翅片管气化器深冷表面上霜晶生长的二维模型,模拟了深冷表面上的霜晶生长过程.采用计盒维数法对模拟出的霜晶生长图像进行了分形维数的计算,结果表明深冷表面上霜晶的分形维数较一般冷表面上的分形维数大,从而说明深冷表面上的霜晶具有更加复杂的结构,充满空间的能力更大.这对进一步理解空温式深...
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| 关 键 词： | 翅片管气化器 结霜模型 分形 数值模拟 |
Frost model and numerical simulation of air-heating fin-tube vaporizer |
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| Chen Shuping,Yao Shuting,XieFushou,Chang Zhixin,Han Hongyin. Frost model and numerical simulation of air-heating fin-tube vaporizer[J]. Cryogenics and Superconductivity, 2011, 39(11): 64-67 |
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| Authors: | Chen Shuping Yao Shuting XieFushou Chang Zhixin Han Hongyin |
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| Affiliation: | (College of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | A two-dimentional model of frost formation and growth on the cryogenic surface of air-heating finned-tube vaporizer was proposed based on Diffusion Limited Aggregation(DLA) model,and the simulation of frost formation and growth on the cryogenic surface was carried out in this paper.The box counting dimension method was used to calculate the fractal dimension of the image of the frost formation and growth.The result showed that the fractal dimension of frost on the cryogenic surface was larger than the fractal dimension of frost on the general cold surface,and frost on the cryogenic surface had a more complex structure and a bigger ability of filling space.It is more significant to further understand the frost growth mechanism on the surface of cryogenic finned-tube vaporizer,to explore the effective defrosting methods and enhance heat transfer characteristics of the vaporizer. |
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| Keywords: | Fin-tube vaporizer Frost model Fractal Numerical simulation |
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