土壤冻融过程中的多层水热耦合模拟研究
发布时间：2018-08-01 13:54
【摘要】：为准确模拟土壤冻融过程中温湿度变化以及水热传递规律,以支撑寒区水循环及其对气候变化的响应研究,在国内具有自主知识产权的WEP-L模型基础上,通过添加土壤层水热耦合计算模块,细化土壤分层结构,构建了多层水热耦合模型。根据吉林省前郭灌区土壤冻融原位实验,确定了模型中的土壤水热参数,并用2011~2012年完整冻融周期内实测的土壤温度和含水率数据进行了模型验证。结果表明,模型能较好的模拟不同深度土层的温湿度变化规律,其中土壤温度模拟的平均NASH效率系数为0.752,土壤含水率和土壤冻结深度的模拟结果和实测值的变化规律较一致。
[Abstract]:In order to accurately simulate the changes of temperature and humidity and the laws of water and heat transfer during soil freezing and thawing, and to support the study of water cycle and its response to climate change in cold regions, the WEP-L model with independent intellectual property rights is used in China. By adding soil layer water-heat coupling calculation module, the soil stratification structure was refined, and the multi-layer water-heat coupling model was constructed. Based on the in-situ experiment of soil freezing and thawing in Qianguo Irrigation District of Jilin Province, the soil water and heat parameters in the model were determined, and the data of soil temperature and moisture content measured during the complete freezing and thawing period from 2011 to 2012 were used to verify the model. The results showed that the model could well simulate the variation of soil temperature and humidity at different depths, and the average NASH efficiency coefficient of soil temperature simulation was 0.752. The simulation results of soil moisture content and soil freezing depth were consistent with the measured values.
【作者单位】： 东华大学环境科学与工程学院;中国水利水电科学研究院流域水循环模拟与调控国家重点实验室;水利部水资源与水生态工程技术研究中心;武汉大学水资源与水电工程科学国家重点实验室;
【基金】：国家自然科学基金项目(51179203);国家自然科学基金项目(51309245,51309248) 国家水体污染控制与治理科技重大专项课题(2008ZX07207-006,2012ZX07201-006) 中国水利水电科学研究院青年专项(资集1301)
【分类号】：P642.14
本文编号：2157789
[Abstract]:In order to accurately simulate the changes of temperature and humidity and the laws of water and heat transfer during soil freezing and thawing, and to support the study of water cycle and its response to climate change in cold regions, the WEP-L model with independent intellectual property rights is used in China. By adding soil layer water-heat coupling calculation module, the soil stratification structure was refined, and the multi-layer water-heat coupling model was constructed. Based on the in-situ experiment of soil freezing and thawing in Qianguo Irrigation District of Jilin Province, the soil water and heat parameters in the model were determined, and the data of soil temperature and moisture content measured during the complete freezing and thawing period from 2011 to 2012 were used to verify the model. The results showed that the model could well simulate the variation of soil temperature and humidity at different depths, and the average NASH efficiency coefficient of soil temperature simulation was 0.752. The simulation results of soil moisture content and soil freezing depth were consistent with the measured values.
【作者单位】： 东华大学环境科学与工程学院;中国水利水电科学研究院流域水循环模拟与调控国家重点实验室;水利部水资源与水生态工程技术研究中心;武汉大学水资源与水电工程科学国家重点实验室;
【基金】：国家自然科学基金项目(51179203);国家自然科学基金项目(51309245,51309248) 国家水体污染控制与治理科技重大专项课题(2008ZX07207-006,2012ZX07201-006) 中国水利水电科学研究院青年专项(资集1301)
【分类号】：P642.14
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