| 土壤中水、热、盐耦合运移的数值模拟 |
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| 引用本文： | 刘炳成,李庆领.土壤中水、热、盐耦合运移的数值模拟[J].华中科技大学学报(自然科学版),2006,34(1):14-16. |
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| 作者姓名： | 刘炳成 李庆领 |
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| 作者单位： | 1. 华中科技大学,能源与动力工程学院,湖北,武汉,430074
2. 青岛科技大学,机电工程学院,山东,青岛,266061 |
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| 基金项目： | 科技部科研项目;中国科学院资助项目;高等学校博士学科点专项科研项目 |
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| 摘 要： | 分析了盐分在土壤中的动态迁移特征及其影响因素,综合运用多孔介质热、质传递理论,考虑温度效应对土壤湿分迁移的影响以及不动水体与盐分吸附或解吸作用,建立了全面描述土壤中水、热、盐耦合运移的数学模型并进行相应的数值研究,获得土壤中水、热、盐的动态迁移特性,探讨了土壤质地对盐分运移的影响,以期为土壤次生盐渍的防治提供有效的理论指导.模拟结果表明:盐分运移受土壤质地与结构的影响较大,并与土壤水分运移密切相关.
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| 关 键 词： | 土壤 盐渍化 吸附与解吸 温度效应 |
| 文章编号： | 1671-4512(2006)01-0014-03 |
| 收稿时间： | 03 29 2005 12:00AM |
| 修稿时间： | 2005年3月29日 |
Numerical simulation of salt, moisture and heat transport in porous soil |
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| Liu Bingcheng,Li qingling.Numerical simulation of salt, moisture and heat transport in porous soil[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2006,34(1):14-16. |
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| Authors: | Liu Bingcheng Li qingling |
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| Abstract: | The dynamic characteristics of soil salt migration and its influential factors were analyzed.On the basis of theories of solute transport and heat and mass transfer in porous media and in consideration of the temperature effect on soil moisture transport and absorption-desorption and mobileimmobile region,the mathematical model for moisture,heat and salt transport was described and numerical research conducted.The dynamic characteristics for moisture,heat and salt transport in soil were obtained.The effect of soil properties on salt migration was analyzed,expecting to provide theoretical guidance for preventing and curing soil salinization.Simulation results indicated that salt transport was affected by soil properties,soil structure,and closely related with soil water migration. |
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| Keywords: | soil salination absorption-desorption temperature effect |
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