| 未冻水在冻土热状况数值模拟中作用的分析 |
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| 引用本文： | 林文生,罗佩芳.未冻水在冻土热状况数值模拟中作用的分析[J].肇庆学院学报,2007,28(2):18-22. |
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| 作者姓名： | 林文生 罗佩芳 |
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| 作者单位： | 内蒙古工业大学理学院，内蒙古工业大学理学院 内蒙古呼和浩特010051，肇庆学院计算机科学系，广东肇庆526061，内蒙古呼和浩特010051，肇庆学院计算机科学系，广东肇庆526061 |
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| 摘 要： | 以Alaska北极美国Barrow气象观测站的地温观测资料和土壤热物理参数为基础,以伴有相变问题的一维热传导方程的有限差分法为工具,在考虑和忽略未冻水2种情形下模拟了Barrow地区0.29,0.50和1.0 m深处的地温值,并与观测值进行了比较.计算结果表明,未冻水对冻土热状况数值模拟结果有很大影响.
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| 关 键 词： | 未冻术 相变热传导 有限差分法 显热容法 冻土 |
| 文章编号： | 1009-8445(2007)02-0018-05 |
| 修稿时间： | 2006年12月7日 |
Analysis for Impact of Unfrozen Water on the Numerical Simulation Results of Permafrost Thermal Regime |
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| LIN Wensheng,LUO Peifang.Analysis for Impact of Unfrozen Water on the Numerical Simulation Results of Permafrost Thermal Regime[J].Journal of Zhaoqing University (Bimonthly),2007,28(2):18-22. |
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| Authors: | LIN Wensheng LUO Peifang |
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| Abstract: | Based on the observed ground temperature data and the soil thermal and physical properties derived from Barrow,Alaska,this paper simulates the ground temperatures at depths of 0.29,0.50 and 1.0m at Barrow,by using a one-dimensional finite difference model for phase change problems.Two simulation cases were conducted by considering the unfrozen water and neglecting the unfrozen water.The simulated and measured soil temperatures at different depths also were compared.The calculated results show that unfrozen water has strong influence on the numerical simulation results of permafrost thermal regime. |
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| Keywords: | unfrozen water heat conduction with phase change finite difference method equivalent heat capacity method permafrost |
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